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Chemistry Apps Final Review Flashcards | StudBud
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Chemistry Apps Final Review
Chemistry Apps Final Review
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Review for the Chemistry Apps Final
Flashcards
40 cards
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Practice quiz
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Questions
40
Answers
1
As you move down the group, what happens to the ionization energy?
no direct correlation
remains the same
decrease
increase
2
All of the following are evidence that a chemical reaction has taken place
except
release of heat
solute dissolving
formation of gas
color change
3
How many sig. figs. does the number 8.900x10^3 meters have.
4
2
1
3
4
Mixture that is not uniform throughout
homogeneous
alloy
heterogeneous
solution
5
Property that depends on the amount of matter that is present
general
intensive
extensive
chemical
6
The ability of an atom to attract electrons is known as
Ionization Energy
Electron Affinity
Electronegativity
Chemistry
7
The energy required to remove one electron from an element is called
Electron affinity
Ionization Energy
Isotopic energy
Electronegativity
8
In a solution the substance that is being dissolved is called the___
solute
solvent
solution
precipitate
9
The state of matter with no definite shape or definite volume is the
gas
liquid
solid
fluid
10
How many sig. figs does the number 0.0540 meters have?
5
4
2
3
11
2.30x10^6 cm^3 = ____________ m^3
23000 m^3
2.30x10^8 m^3
2.30x10^4 m^3
2.30 m^3
12
All ________ have 7 valence electrons.
noble gases
halogens
alkaline earth metals
alkali metals
13
The total number of protons and neutrons in the nucleus of an atom is its
atomic number
atomic mass
avagadro's number
nucleus number
14
The reaction Mg(s) + 2HCl(aq) --> H
2
(g) + MgCl
2
(aq) is a
decomposition reaction.
composition reaction
double-replacement reaction.
single-replacement reaction.
15
Write the following number in scientific notation: 3000
3.000x10^-3
3.000x10^3
3x10^3
3x10^-3
16
What are the units for molecular mass?
moles
grams
grams/mole
moles/gram
17
Isotopes of an element contain different numbers of
neutrons
electrons
protons
atoms
18
How many sig. figs. does the number 3600 meters have
1
2
3
4
19
Elements in the same _________ have the same number of ___________.
period, valence electrons
group, electron orbits
period, electron orbits
group, family
20
Each element in this family has only 1 valence electron.
alkali
alkaline earth
halogen
Ion
21
To balance a chemical equation, it may be necessary to adjust the
coefficients
compounds
subscripts
formulas
22
Cobaltl-59 (atomic number 27) has how many neutrons?
60
28
32
88
23
480 cm = __________ km
0.0048 km
4.80x10^-3 km
4.80x10^7 km
48000000 km
24
Avogadro's constant is
6.022x10^22
the number of particles in 1 gram of a pure substance.
the number of protons and neutrons in the nucleus.
the number of particles in 1 mole of a pure substance.
25
Write the following number in scientific notation: 0.00580
5.8x10^3
5.8x10^-3
5.80x10^3
5.80x10^-3
26
As you move left to right across the period, what happens to the atomic radii?
decreases
remains the same
increases
no direct correlation
27
How many sig. figs. does the number 540.0 meters have?
2
4
1
3
28
A berylium atom has an atomic number of 4 and mass number of 9. It has
5 protons, 5 electrons, and 4 neutrons
9 protons, 9 electrons and 4 neutrons
4 protons, 4 electrons, and 5 neutrons
4 protons, 4 electrons, and 13 neutrons
29
Halogen elements like to react with
alkali metals
sophmores
alkaline earth metals
other halogens
30
In an ionic compound the first element is the ______ ion and the last is the _____ ion.
anion, cation
pro, cat
cation, anion
nonmetal, metal
31
Physical means can be used to separate
mixtures
elements
compounds
pure substances
32
A solid that is produced as a result of a chemical reaction is known as a(n)
ice
precipitate
crystal
alloy
33
Pressure has the greatest effect on the solubility of
gasses
solids
alloys
liquids
34
The element tellurium has ___ valence electrons and ___ electron shells.
16, 5
5, 16
5, 6
6, 5
35
How many electrons do elements want to have in their outer most energy level?
8
2
4
16
36
In the name iron (III) sulfate, the Roman numeral tells us.
the charge of the iron
The number of sulfates
the number of iron atoms
the charge of the sulfate
37
A charged particle is known as a (an)
electron
neutron
isotope
ion
38
what is the formula calcium carbonate?
CaC3
CaCOO2
CaCO3
Ca2CO3
39
Chemistry is defined as the study of the composition and structure of materials and
the changes in matter
the categories of elements.
the connection of science classes.
molecules in living things.
40
A chlorine isotope contains 17 protons,17 electrons,and 18 neutrons. What is its atomic number?
24
17
18
35
