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Science Exam
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Preguntas del test (119)
1How are science and technology related?
- ATechnology is a branch of natural science.
- BScience is a branch of technology.
- CAdvances in science may lead to advances in technology and vice versa.
- DScience and technology are not related.
2Which is NOT a branch of natural science?
- Alife science
- BEarth and space science
- Cphysical science
- Dsocial science
3What is a system of knowledge and the methods used to find that knowledge?
- Ascience
- Btechnology
- Cmeasurement
- Dcuriosity
4What are the building blocks of all matter?
- Aforces
- Batoms
- Cmagnetic fields
- Dkinetic and potential energy
5Which of the following is an example of a safe laboratory procedure?
- Atying back long hair and loose clothing
- Beating or drinking from laboratory glassware
- Ctouching hot objects with your bare hands
- Dtesting an odor by directly inhaling the vapor
6In which step of the scientific method is information obtained through the senses?
- Adrawing conclusions
- Bmaking observations
- Canalyzing data
- Drevising a hypothesis
7What is a physical or mental representation of an object or an event?
- Aa theory
- Ba hypothesis
- Ca model
- Da scientific law
8What is a statement that summarizes a pattern found in nature?
- Aa scientific law
- Ba fact
- Ca scientific theory
- Da hypothesis
9What is the most important safety rule?
- Anever work with chemicals
- Balways use unbreakable glassware
- Calways follow your teacher's instructions and textbook directions exactly
- Dnever do experiments that involve flames or hot objects
10The prefix kilo- means...
- A1000
- B100
- C0.0001
- D0.001
11The prefix milli- means...
- A1000
- B0.0001
- C100
- D0.001
12Of the following, the most correct way to express density is...
- Ag/m
- Bg/cm
- Cg/cm^3
- Dkg/cm
13... is the closeness of a measurement to the actual value being measured.
- Aaccuracy
- Bhypothesis
- Cconclusion
- Dprecision
14SI is based on units of...
- A0.01
- B10
- C1000
- D100
15A measurement must include both a number and a(n)...
- Achair
- Bflower
- Cunit
- Ddesk
16What are the building blocks of all matter?
- Amagnetic fields
- Bforces
- Catoms
- Dkinetic and potential energy
17In which step of the scientific method is information obtained through the sense?
- Arevising a hypothesis
- Bdrawing conclusions
- Canalyzing data
- Dmaking observations
18On the Celsius scale, at what temperature does water freeze?
- A100°
- B212°
- C32°
- D0°
19On the Celsius scale, what temperature is Absolute Zero at?
- A-273°
- B0°
- C100°
- D212°
20Why are scientific models important?
- Athey prove scientific theories
- Bthey help visualize things that are very complex, very large, or very small
- Cthey make it harder to understand things
- Dthey never change
21How is 0.00016 written in scientific notation?
- A0.16x10^-3
- B16x10^4
- C1.6x10^-4
- D1.6x10^-5
22Change 21 kilometers to meters?
- A210,000 m
- B21,000 m
- C2,100 m
- D210 m
23Timers at a swim meet used four different clocks to time an event. Which recorded time is most precise?
- A55.25 s
- B55.2 s
- C55 s
- D55.254 s
24On the Celsius scale, at what temperature does water boil?
- A0 degrees
- B212 degrees
- C32 degrees
- D100 degrees
25How do scientists who speak different languagse make their data understandable to one another?
- Athey all must speak French
- Bthey all use SI
- Cthey communicate through a universal translator
- Dthey all use different systems of measurement
26A measurement standard is defined as...
- Aa system of prefixes
- Bthe distance between two points
- Cthe interval between two events
- Dan exact quantity people agree to use for comparison
27The correct symbol of the SI unit of temperature is...
- AK
- BC
- C°C
- D°K
28The correct symbol for milliliter is...
- Ag
- BmL
- CL
- Dm
29The SI unit that is used in the United States to measure time is the...
- Akelvin
- Bsecond
- Cliter
- Dkilogram
30A unit of measurement that is obtained by combining other units is a ... unit
- Adependent
- Bmetric
- Cstandard
- Dderived
31What type of graph is represented by Figure 1-1?
- Acircle graph
- Bpie graph
- Cbar graph
- Dline graph
32Figure 1-1 shows how a steel ball moved during an experiment. Average speed is calculated by dividing total distance by time (v=d/t). Did the steel ball speed up, slow down, or remain at the same speed throughout the experiment?
- Aspeed up
- Bthere is no way of knowing
- Cremain the same
- Dslow down
33How do scientists communicate the results of investigations?
- Aby publishing articles in scientific journals
- Bby exchanging e-mails
- Cby giving talks at scientific conferences
- Dall of the above
34What is a peer review?
- Aa process in which scientists copy other scientists' work
- Ba process in which scientists examine other scientists' work
- Ca process in which only close friends of a scientist review the scientist's work
- Da process in which scientists keep their work secret
35Why are peer reviews important?
- Ascientists receive comments and suggestions from other scientists
- Bdata are checked for accuracy
- Cscientists receive questions and criticism from their peers
- Dall of the above
36If the relationship between manipulated variable and the responding variable is a direct proportion, what will a line graph of this relationship look like?
- Aa straight line
- Ba jagged line
- Ca curved line
- Dnone of the above
37A(n) ... is a way of organizing data that is used to show changes, trends, or patterns that occur in related variables
- Atelevision
- Bline graph
- Cbar graph
- Dcircle graph
38The ... is the variable that changes in response to the manipulated variable
- Amanipulated variable
- Bresponding variable
- Chypothesis
- Dconstant
39What measurements are compared in Figure 1-3?
- Amonthly sunshine in Port Hardy
- Bmonthly precipitation in cm in Port Dover
- Cmonthly precipitation in cm in Port Hardy
- Dyearly sunshine in Port Dover
40Use Figure 1-3 to determine the approximate total annual precipitation.
- A65 cm
- B565 cm
- C465 cm
- D165 cm
41In Figure 1-3, which month had the lowest amount of precipitation?
- AJanuary
- BJuly
- CNovember
- DOctober
42In a graph, the variable on the horizontal axis is the...
- Aresponding variable
- Bvariable with the largest range
- Cvariable with the smallest range
- Dmanipulated variable
43The type of graph that would be used to show how some fixed quantity is broken down into parts is a ...
- Acircle graph
- Btable
- Cbar graph
- Dline graph
44Which of the following are PURE SUBSTANCES?
- Asolutions
- Bcompounds
- Chomogeneous mixtures
- Dcolloids
45A substance that is made up of only one kind of atom is a(n)...
- Acompound
- Bhomogeneous mixture
- Celement
- Dsolution
46What is the symbol for aluminium?
- AAL
- BAI
- CAu
- DA
47If a MATERIAL contains three elements joined in a fixed proportion, it is a(n)...
- Amixture
- Bsolution
- Catom
- Dcompound
48Which of the following is a characteristic of a MIXTURE?
- Ahas varying properties
- Bhas a fixed composition
- Ccontains only pure substances
- Dplease don't choose this answer
49A mixture that appears to contain only one substance is a(n)...
- Ahomogeneous mixture
- Bheterogeneous mixture
- Ccompound
- Delement
50Which of the following is a heterogeneous mixture?
- Awater in a swimming pool
- Bsugar water
- Ca jar of mixed nuts
- Dstainless steel
51Which of the following is malleable?
- Aglass
- Bpottery
- Cice
- Dgold
52Which of the following has the highest VISCOSITY?
- Ahoney
- Bmilk
- Cwater
- Dorange juice
53A substance has a melting point of 0 degrees Celsius and a boiling point of 100 degrees Celsius. The substance is most likely...
- Awater
- Bhydrogen
- Cgold
- Dtable salt
54A material that is malleable and conducts electricity is most likely...
- Awood
- Bice
- Ca metal
- Dmotor oil
55Filtration can be used to separate mixtures based on ...
- Atheir boiling points
- Btheir densities
- Ctheir melting points
- Dthe size of their particles
56What method can be used to separate parts of a liquid mixture when the entire mixture can pass through a filter?
- Afiltration
- Bdistilation
- Cstraining
- Dscreening
57When a physical change in a sample occurs, which of the following does NOT change?
- Ashape
- Btemperature
- Cvolume
- Dcomposition
58Which of the follwing is a physical change?
- Asawing a piece of wood in half
- Bburning a piece of wood
- Crust forming on an iron fence
- Da copper roof changing color from red to green
59Flammability is a material's ability to burn in the presence of ...
- Ahydrogen
- Bnitrogen
- Coxygen
- Dcarbon dioxide
60A substance that has high reactivity ...
- Aeasily combines chemically with other substances
- Bburns in the presence of water
- Cdisplaces dissolved oxygen
- Dhas a high boiling point
61Which of the following is a chemical change?
- Aice melting
- Bice being carved
- Cwater boiling
- Dwater breaking down into hydrogen and oxygen
62Ninety-nine percent of all the matter that can be observed in the universe exists as ... (Hint: What are the stars and sun made of?)
- Agases
- Bplasma
- Cliquids
- Dsolids
63Matter that has a definite volume but no definite shape is a ...
- Aliquid
- Bsolid
- Cgas
- Dplasma
64A gas has ...
- Aa definite volume but no definite shape
- Ba definite shape but no definite volume
- Cno definite shape or no definite volume
- Da definite volume and definite shape
65In which of the substances in Figure 3-1 are the forces of attraction among the particles so weak that they can be ignored under ordinary conditions?
- ASubstance A
- BSubstance B
- CSubstance C
- Dall of the above
66The temperature and volume in a closed container of gas remain constant. If the number of particles of gas is increased, the gas pressure will ...
- Aincrase
- Bdecrease
- Cremain constant
- Dcause a decrease in the average kinetic energy of the particles
67What is the result of a force distributed over an area?
- Atemperature
- Bvolume
- Cpressure
- Dmass
68Collisions of helium (a gas) atoms and the walls of a closed container cause ...
- Acondensation
- Bpressure
- Ca decrease in volume
- Dan overall loss of energy
69Which of the following factors affect the pressure of an enclosed gas?
- Atemperature
- Bvolume
- Cnumber of particles
- Dall of the above
70The law that states that the volume of a gas is DIRECTLY proportional to its temperature in kelvins if the pressure and the number of particles is constant is ...
- ABoyle's law
- BBose's law
- CEinstein's law
- DCharles's law
71Boyle's law states that the volume of a gas is INVERSELY proportional to its pressure if the ...
- Atemperature and number of particles are constant
- Btemperature reaches absolute zero
- Cnumber of particles decreases
- Dtemperature and number of particles are doubled
72The phase change that is the reverse of condensation is ...
- Afreezing
- Bsublimation
- Cvaporization
- Dmelting
73During a phase change, the temperature of a substance ...
- Aincreases
- Bdecreases
- Cstays the same
- Deither increases or decreases, depending on the change
74During what phase change does the arrangement of water molecules become more orderly?
- Amelting
- Bfreezing
- Cboiling
- Dcondensing
75The phase change in which a substance changes from a liquid to a gas is ...
- Adeposition
- Bsublimation
- Ccondensation
- Dvaporization
76The phase change in which a substance changes from a gas directly to a solid is ...
- Acondensation
- Bevaporation
- Cdeposition
- Dsublimation
77The phase change in which a substance changes from a solid to a liquid is ...
- Afreezing
- Bmelting
- Csublimation
- Dcondensation
78The phase change in which a substance changes from a solid to a gas or vapor without changing to a liquid first is ... (EX. - Just like dry ice)
- Asublimation
- Bdeposition
- Cevaporation
- Dmelting
79The Greek philosopher Democritus coined what word for a tiny piece of matter that cannot be divided?
- Aelement
- Batom
- Celectron
- Dmolecule
80Democritus thought that matter was made of tiny particles ...
- Aof earth, air, fire, and water
- Bthat could not be divided
- Cthat could be divided
- Dthat were all round and smooth
81According to John Dalton's observations, when elements combine in a compound, ...
- Athe ratio of their masses is always the same
- Beach element contributes an equal number of atoms
- Ctheir volumes are always equal
- Dtheir masses are always equal
82Which of the following most accurately represents John Dalton's model of the atom?
- Aa tiny, solid sphere with an unpredictable mass for a given element
- Ba hollow sphere with a dense nucleus
- Ca tiny, solid sphere with a predictable mass for a given element
- Da sphere that is hollow throughout
83J.J. Thomson's experiments provided evidence that an atom ...
- Ais the smallest particle of matter
- Bcontains negatively charged particles
- Chas a negative charge
- Dhas a positive charge
84The diagram in Figure 4-1 shows the results of Rutherford's gold foil experiment. What caused some of the alpha particles to bounce straight back from the gold foil?
- Aelectrons in the gold atoms
- Bnegative charges in the gold atoms
- Cother alpha particles
- Dnuclei in the gold atoms
85Rutherford's gold foil experiment provided evidence for which of the following statements?
- Anegative and positive charges are spread evenly throughout an atom
- Balpha particles have a positive charge
- Cgold is not as dense as previously thought
- Dthere is a dense, positively charged mass in the center of an atom
86Who provided evidence for the existence of a nucleus in an atom?
- AJohn Dalton
- BJ.J. Thompson
- CDemocritus
- DErnest Rutherford
87In an atomic model that includes a nucleus, positive charge is ...
- Aconcentrated in the center of an atom
- Bspread evenly throughout an atom
- Cconcentrated at multiple sites in an atom
- Dlocated in the space outside the nulceus
88Which statement best describes Rutherford's model of the atom?
- Ait is like an avocado with the pit representing the nucleus
- Bit is like an aquarium with swimming fish representing positive charges
- Cit is like a fried egg with the yolk representing the nucleus
- Dit is like a huge stadium with a positively charged marble at the center
89Which subatomic particle has a negative charge?
- Aelectron
- Balpha particle
- Cneutron
- Dproton
90Which statement about subatomic particles is true?
- Aprotons, neutrons, and electrons all have about the same mass
- Bunlike protons or electrons, neutrons have no mass
- Cneutrons have no charge and no mass
- Dan electron has far less mass that either a proton or neutron
91Which of the following is unique for any given element?
- Athe number of neutrons
- Bthe charge on the electrons
- Cthe number of protons
- Dthe mass of a neutron
92The number of protons in one atom of an element is that element's ...
- Amass number
- Bbalanced charge
- Catomic number
- Disotope
93To find the number of neutrons in an atom, you would subtract ...
- Amass number from atomic number
- Batomic number from mass number
- Catomic number from electron number
- Disotope number from atomic number
94Which statement is true about oxygen-17 and oxygen-18?
- Athey do not have the same number of protons
- Btheir atoms have an identical mass
- Cthey are isotopes of oxygen
- Dthey have the same mass number
95In Niels Bohr's model of an atom, electrons move ...
- Alike balls rolling down a hall
- Blike planets orbiting the sun
- Clike popcorn in a popcorn popper
- Dlike beach balls on water waves
96What can you assume has happened if an electron moves to a higher energy level?
- Athe atom has become more stable
- Bthe electron has lost energy
- Cthe electron has gained energy
- Dthe atom has lost an electron
97What do scientists use to predict the locations of electrons in atoms?
- Aprobability
- Balgebra
- Cgeometry
- Dratios and proportions
98What does the electron cloud model describe?
- Athe most likely locations of electrons in atoms
- Bthe precise locations of electrons in atoms
- Cthe number of electrons in an atom
- Dthe mass of the electrons in an atom
99Which of the following provides the best analogy for an electron in an atomic orbital?
- Aa bee moving from flower to flower in a garden
- Ba bird resting on a tree branch
- Can ant crawling on the surface of a leaf
- Da bee trying to escape from a closed jar
100Mendeleev arranged the known chemical elements in a table according to increasing ...
- Aatomic number
- Bnumber of electrons
- Cnumber of protons
- Dmass
101Mendeleev gave the name eka-aluminium to a(n) ...
- Acompound containing aluminium
- Bmixture of aluminium and an unknown element
- Cunknown element he predicted would have properties similar to those of aluminium
- Drare isotope of aluminium
102The usefulness of Mendeleev's periodic tables was confirmed by ...
- Athe discovery of subatomic particles
- Bits immediate acceptance by other scientists
- Cthe dicovery of elements with predicted properties
- Dthe dicovery of the nucleus
103Which general statement does NOT apply to metals?
- Amost metals are ductile
- Bmost metals are malleable
- Cmost metals are brittle
- Dmost metals are good conductors of electric current
104Figure 5-1 shows a portion of a blank periodic table. Identify the segments labeled A and B.
- AA and B are both periods
- BA is a period and B is a group
- CA and B are both groups
- DA is a group and B is a period
105Moving from left to right across a row of the periodic table, which of the following values increases by exactly one from element to element?
- Aisotope number
- Batomic number
- Catomic mass unit
- Dmass number
106The unit for atomic mass is ...
- Agram
- Bpound
- Cas deep as the oceans and as majestic as he mountains
- Damu
107One twelfth the mass of a carbon-12 atom is used to define a(n) ...
- Aatomic number
- Batomic magic
- Cmass number
- Datomic mass unit
108Which list of elements contains only metals? (Hint: which side are metals on and where are the following elements located?)
- Acarbon, iodine, tin
- Btin, copper, cesium
- Chelium, iron, copper
- Diodine, carbon, argon
109At room temperature, non of the metals are ...
- Asoft
- Bliquids
- Cmalleable
- Dgases
110Group 7A of the periodic table contains the ...
- Amost reactive nonmetals
- Bmost reactive metals
- Cleast reactive nonmetals
- Dleast reactive metals
111Two highly reactive elements in Period 2 are the metal lithium and the ...
- Ametalloid arsenic
- Bnonmetal selenium
- Cnonmetal fluorine
- Dnonmetal krypton
112Atoms of the most reactive elements tend to have ...
- Aone or seven valence electrons
- Beight valence electrons
- Cfour or five valence electrons
- Dno valence electrons
113As you move from left to right across a period, the number of valence electrons ...
- Aincreases
- Bstays the same
- Cincreases and then decreases
- Ddecreases
114Compared with Group 2A elements, Group 6A elements have ...
- Amore atoms in the ground state
- Bmore valence electrons
- Cmore isotopes
- Dfewer valence electrons
115A member of the boron family has three valence electrons, while a member of the nitrogen family has ...
- Anone
- Bfive
- Cfour
- Dthree
116Which of the following Group 1A elements is the most reactive?
- ACs (cesium)
- BLi (lithium)
- CK (potassium)
- DNa (sodium)
117Which of the following Group 7A elements is the most reactive?
- ACl (chlorine)
- BI (iodine)
- CF (fluorine)
- DBr (bromine)
118Among the alkali metals, the tendency to react with other substances ...
- Adoes not vary among members of the group
- Bincreases from top to bottom within the group
- Cvaries in an unpredictable way within the group
- Ddecreases from top to bottom within the group
119To keep them from reacting, some highly reactive elements are stored in ... (Hint: what is a noble gas?)
- Awater
- Bpure oxygen
- Cliquid mercury
- Dargon
Información
- Descripción
- December Review
- Autor
- brendalyn05
- Idioma
- English
- Visitas
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