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Che 103 1st test
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Preguntas del test (35)
1Tin's atomic number is 50. This means that all tin atoms have?
- A50 protons in the nucleus
- B50 neutrons in the nucleus
- Ca total of 50 subatomic particles in the nucleus
- D50 electrons
2After the 4s subshell of an atom is filled with electrons, the next electron added will enter the .... ?
- A3d subshell
- B4d subshell
- C4p subshell
- D5s subshell
3In which of the following pairs of elements are both metals?
- AP and O
- BNb and Ar
- CAl and Cl
- DAg and Pb
4The modern periodic table arranges the elements in order of .....
- AYear of discovery increasing
- BReactivity with oxygen
- CDecreasing size of the nucleus
- DIncreasing number of protons
5Isotopes of given element .....
- Ahave the same mass number but different numbers of protons
- Bhave different mass numbers but identical numbers of protons
- Chave the same atomic number but different chemical properties
- Dhave the same mass number but different chemical properties
6In which one of the following measure numbers are all of the Zeros significant ?
- A0.0705
- B0.000440
- C3,300,000
- D3.945900
7What is the mass, in grams, of 30.7 ml of liquid if its density is 0.81 g/ml?
- A3.8 g
- B0.026 g
- C25 g
- D38 g
8If the temperature of and object is 435 C, what is temperature on a Kelvin scale ?
- A162 K
- B672 K
- C608 K
- D708 K
9A sample of the element weighing 42.923 grams was dropped in a graduated cylinder containing 22.30 ml. What is the density of calcium?
- A1.796 g/ml
- B26.83 g/ml
- C19.3 g/ml
- D68.68 g/ml
10Glass has a density of 2.05 g/ml. what is the volume of 46.3 grams of glass?
- A94.9 ml
- B0.0443 ml
- C22.6 ml
- D5.62*10^-2 ml
11In which of the following pairs of properties are both chemical properties ?
- Afreezes at 10 degree C and nonflammable
- Bdecomposes at 5000 degree C and reacts with bromine
- Cpoor conductor of heat and is reddish brown in color
- Dhas a low density and is very hard
12In which of the following pairs of measured numbers does each member of the pair contain the same number of significant figures ?
- A10.3 and 10.30
- B0.03330 and 0.0333
- C800.0 and 80
- D0.000096 and 960,000
13The density of an object is the ratio of its
- Alength to volume
- Bmass to volume
- Cmass to height
- Dlength to mass
14In which of the following sequences of elements do all members of the sequence have chemical symbols starting with the same letter?
- ASulfur, Silicon, Sodium
- BGold, Silver, Aluminum
- CPotassium, Phosphorus, Lead
15Which of the following changes is a chemical change ?
- Amelting ice
- Bpulverizing of hard sugar cubes
- Crusting of iron
16Your sweetheart gives you 1.25lb of lindt's chocolates for your birthday. How much is this in grams?
- A908 grams
- B363 grams
- C5.7 grams
- D568 grams
17This states that any compound is always made up elements in the same proportion by mass.
- ADalton's Atomic Theory
- BOctet Rule
- CLaw conservation of matter
- Dlaw of definite composition
18the description " two substances present, two phases present" is correct for
- Aheterogeneous mixtures
- Belements
- Chomogeneous miture
- Dcompounds
19Electrons in an orbital always in opposite direction Who's law is this?
- AAufbau
- BPauli
- CHund
- DProust
20Group VllA is the
- AAlkaline earth metals
- BHalogens
- Calkali metals
- DNoble gases
21Which of following element is a metalloid ?
- AAs
- BPb
- CAl
- DBe
22A substance has a freezing point of -20 degree C. This is an example of a :
- Aphysical property
- Bphysical change
- Cchemical property
- Dchemical change
23What is true about metal elements to nonmetal elements?
- Amore nonmetals than metals
- Bmore metals than nonmetals
- Cmetals are equal to nonmetals
- Dthere are no nonmetals
24Which group of elements is the seven diatomic molecules?
- AH2,N2,O2,F2,Ne2,Ar2,Kr2,
- BH2,O2,F2,Cl2,Br2,I2,At2
- CH2,N2,O2,F2,Cl2,Br2,I2
- DH2,N2,B2,O2,F2,Cl2,Br2
25The states that matter is neither created nor destroyed, but changes from one form to another
- ADalton's Atomic theory
- BOctet rule
- Claw of conservation ofmatter
- Dlaw of definite composition
26Elements in groups lA and llA are referred to as the ?
- Ap-block elements
- Bd-block elements
- Cf-block elements
- Ds-block elements
27What subatomic particle(s) are found in the nucleus ?
- Aproton and electrons
- Bprotons
- Cneutrons
- Dneutrons and protons
28what are the horizontal rows of the periodic table called?
- AGroup
- Bperiods
- Cfamilies
- Dcolumns
29The properties of ductility, malleability, ability to conduct heat and electricity are characteristics of what type of materials ?
- Aall elements
- Bmetallic elements
- Cmetalloids element
- Dnonmetals element
30an atom contains 33 protons, 35 neutons, and 33 electrons. The atomic number and mass number for this atom are :
- A35 and 33
- B33 and 35
- C33 and 68
- D35 and 68
31The elements in group lVA of the periodic table all have electron configuration ending in
- AP2
- BP4
- Cd4
- Ds2
32In which of the following sequences of elements does each of the elements have a one-letter chemical symbol?
- Aindum, carbon, silver
- Biodine, boron, tungsten
- Cantimony, boron, nitrogen
- Dnitrogen, germanium, bromine
33A substance melted
- Aphysical property
- Bchemical property
- Cphysical change
- Dchemical change
34in which of the following sequences of elements does each of the elements does each of the elements have a two-letter chemical symbol ?
- ABarium, iron, nitrogen
- Bsilicon, zinc, hydrogen
- Cselenium, nickel, strontium
- Diodine, xenon, titantium
35Which of the following is a property of both gases and liquids?
- Adefinite shape
- Bindefinite shape
- Cdefinite volume
- Dindefinite volume
Información
- Descripción
- Chemistry Test sobre Che 103 1st test, creado por Erica Fields el 05/02/2017.
- Autor
- Erica Fields
- Idioma
- English
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- 2
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