Test
science
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Preguntas del test (51)
1Empedocles was the first philosopher and poet who is important to the history of chemistry because he was the first person to suggest
- Athat matter is all around us
- Bthat matter is made up of certain elments
- Cthat matter is solid liquid or gas
- Dthat matter is made up of indivisble particles
2Democritus also know as the laughing philosopher is important to the history of chemistry because he was the first person to suggest
- Athat matter is all around us
- Bthat matter is made up certain elements
- Cthat matter is solid liquid or gas
- Dthat matter is made up of indivisble particles
3[blank_start]p[blank_end] state of matter
- Ap
4an [blank_start]atom[blank_end] is the basic particle from which all elements are made
- Aatom
5a [blank_start]compound[blank_end] is formed when two or more different elements combine in a set ratio
- Acompound
6a [blank_start]molecule[blank_end] is formed when two or more atoms combine to form a larger particle
- Amolecule
7an example of a unit used when measuring density is
- Ag/ml
- Bl/cm3
- Cm/s2
- Dkg/m
8which is a example of a endothermic change
- Aice melting
- Bfireworks
- Ca glow stick
- Dwater vapor condensing
9which is an example of a exothermic change
- Apond freezing
- Bcold pack
- Cice melting
- Dsoup boiling
10the two main areas in an atom are the [blank_start]necleus[blank_end] and the [blank_start]electron cloud[blank_end]
- Aelectron cloud
- Bnecleus
11[blank_start]istopes[blank_end] are atoms of the same element that have different numbers of neutrons
- Aistopes
12[blank_start]bohr[blank_end] model first model with electrons in energy shells
- Abohr
- Bthomposon moel
- Celectron cloud model
- Drutherford model
- Edalton modle
13[blank_start]thompson model[blank_end] first model with electrons
- Athompson model
- Bbohr model
- Celectron cloud model
- Drutherford model
- Edalton model
14[blank_start]electron cloud[blank_end] model first model with electrons in regions of space around the nucleus
- Aelectron cloud
- Bthompson model
- Cbohr model
- Drutheford model
- Edalton model
15[blank_start]rutherford[blank_end] model first model with a nucleus
- Arutherford
- Bbohr model
- Cthomposon moel
- Delectron cloud model
- Edalton model
16[blank_start]dalton model[blank_end] first model with atoms as hard speres
- Adalton model
- Bthomposon moel
- Cbohr model
- Delectron cloud model
- Erutherford model
17dimitri grew up in the country of [blank_start]russia[blank_end]
- Arussia
18dimitris main job was a [blank_start]teacher[blank_end]
- Ateacher
19dimitri organized the periodic table in order of increasing [blank_start]atomic mass[blank_end]
- Aatomic mass
20[blank_start]m[blank_end] malleable
- Am
21[blank_start]m[blank_end] located to the left of the stair step line
- Am
22[blank_start]m[blank_end] located to the right of the stair step line
- Am
23[blank_start]valance electrons[blank_end] have the highest energy and are held most loosely
- Avalance electrons
24an [blank_start]ion[blank_end] is an atom or group of atoms that has an electric charge
- Aion
25the attraction between two oppositely charged ions form an [blank_start]ionic bond[blank_end]
- Aionic bond
26ionic compounds have high melting points
- AVerdadero
- BFalso
27ionic bonds are weak
- AVerdadero
- BFalso
28ionic compounds form solid crystals
- AVerdadero
- BFalso
29when dissolved into water ionic solids wont conduct electricty
- AVerdadero
- BFalso
30if ions are free to move around they will be to conduct electricty
- AVerdadero
- BFalso
31molecular compounds have melting points
- Ahigh
- Blow
32molecular compounds electricty when dissolved in water
- Ado conduct
- Bdo not conduct
33a will form between two nonmetal atoms or the same element
- Apolar bond
- Bnon polar bond
34[blank_start]c[blank_end] leaves turning from green to red in fall
- Ac
35[blank_start]p[blank_end] a flooded mountain stream eroding the dirt from its banks
- Ap
36the amount of substance in a given volume is [blank_start]concentration[blank_end]
- Aconcentration
37the minimum amount of energy needed to start a chemical reaction is [blank_start]activation energy[blank_end]
- Aactivation energy
38catalysts in our bodies that speed up important reactions are callesd [blank_start]wnzymes[blank_end]
- Aenzymes
39soda water is a solution of carbon dioxide gas in water is a solution
- Asolid
- Bliquid
- Cgaseous
- Dplasma
40where is the atomic mass located
- Aabove the element
- Bbelow the element
- Con the group of the element
41the [blank_start]atomic number[blank_end] is equal to the protons and electrons
- Aatomic number
42the [blank_start]mass number[blank_end] is located [blank_start]under[blank_end] the element
- Amass number
- Bunder
43the number of neutrons is the [blank_start]atomic number[blank_end] minus the [blank_start]mass number[blank_end]
- Aatomic number
- Bmass number
44the specific amount of energy that an electron has is its [blank_start]energy level[blank_end]
- Aenergy level
45the horizontal rows of elements on the periodic table are called [blank_start]periods[blank_end]
- Aperiods
46the veriticle lines are called [blank_start]groups[blank_end]
- Agroups
472 elements that are important to life are [blank_start]carbon[blank_end] and [blank_start]oxegyn[blank_end]
- Acarbon
- Boxegyn
48metals usually [blank_start]give away[blank_end] electrons in order to form an ionic bond
- Agive away
49nonmetals usualy [blank_start]gain[blank_end] electrons in order to form an ionic bond
- Again
50metals form [blank_start]positive[blank_end] ions
- Apositive
51nonmetals form [blank_start]negative[blank_end] ions
- Anegative
Información
- Descripción
- Test sobre science, creado por elliespearman131 el 17/12/2015.
- Autor
- elliespearman131
- Idioma
- English
- Visitas
- 1
- Valoración
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