NEW
Font size
S
M
L
XL
WorksheetsAVID Chemistry
Total questions: 80
Worksheet time: 1hrs 29mins
Name
Class
Date
1.
Atomic mass - Atomic Number =
a)
protons
b)
neutrons
c)
electrons
d)
Average Mass
2.
Isotopes are two atoms of the same element that differ in the number of....
a)
protons
b)
Electrons
c)
Neutrons
d)
IONS
3.
An element is defined by its number of
a)
protons
b)
electrons
c)
neutrons
d)
protons + electrons
4.
C-12 and C-14 are known as...
a)
Ions
b)
Isotopes
c)
Protons
d)
explosives
5.
Which of the subatomic particles is the lightest
a)
all have the same mass
b)
protons
c)
neutrons
d)
electrons
6.
The relative mass of an electron is...
a)
1
b)
2
c)
0
d)
3
7.
What does the 6 represent above the C
a)
Symbol
b)
Name
c)
Mass Number
d)
Atomic Number
8.
How many electrons can be held in the first energy level ?
a)
1
b)
2
c)
8
d)
16
9.
What is this element?
1s22s22p63s2
1s22s22p63s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
10.
Electrons occupy orbitals of lowest energy first is part of what electron configuration rule?
a)
Hund’s Rule
b)
Aufbau Principle
c)
Pauli Exclusion Principle
11.
What is this element?
1s22s22p63s23p64s23d10
1s22s22p63s23p64s23d10
a)
Zinc
b)
Copper
c)
Nickel
d)
Germanium
12.
What is the noble gas configuration for Sulfur?
a)
[Ar] 3p4
b)
[He] 3s2 3p4
c)
[Ne] 3s2 3p4
d)
[Na] 3s2 3p4
13.
What is this element?
1s22s22p63s23p6
4s23d104p6
1s22s22p63s23p6
4s23d104p6
a)
Argon
b)
Krypton
c)
Selenium
d)
Bromide
14.
In the modern periodic table elements are arranged by:
a)
atomic mass
b)
atomic number
c)
valence electrons
d)
number of isotopes
15.
The atomic number tells you what?
a)
number of electrons
b)
number of protons
c)
number of neutrons
d)
both electrons and protons in an atom.
16.
Which group of the periodic table is composed of inert (not reactive) gases?
a)
alkali metals
b)
alkaline earth metals
c)
halogens
d)
noble gases
17.
The periodic table has __ periods.
a)
18
b)
8
c)
2
d)
7
18.
Rows on the period table are called _____ while columns are called _____.
a)
groups, families
b)
groups, periods
c)
periods, groups
d)
families, groups
19.
Salt dissolves in water
a)
physical Change
b)
chemical change
20.
a piece of copper is cut in half
a)
physical change
b)
chemical change
21.
How many protons are in C-14 ?
a)
6
b)
8
c)
14
d)
10
22.
Electrons are found in the....
a)
nucleus
b)
energy levels
c)
isotopes
d)
protons
23.
How many electrons can the 2nd energy level hold ?
a)
2
b)
4
c)
8
d)
16
24.
Which has a charge of +1?
a)
proton
b)
neutron
c)
electron
d)
atom
25.
How many electrons are in an neutral atom of sodium?
a)
22
b)
11
c)
23
d)
12
26.
Which is the correct number of valence electrons in the element Gallium (Ga)?
a)
13
b)
31
c)
3
d)
1
27.
What is the best explanation of how light is emitted from an atom
a)
Electrons emitted from the nucleus in an atom
b)
Gamma rays from radioactive atoms
c)
Electrons falling from a higher to a lower energy level in an atom
d)
Electrons being excited from a lower to a higher energy level in an atom
28.
Which scientist described an atom made of a solid positively charged substance with electrons dispersed throughout it?
a)
Thomson
b)
Chadwick
c)
Bohr
d)
Dalton
29.
Which scientist developed the model of the atom shown?
a)
Thomson
b)
Rutherford
c)
Dalton
d)
Chadwick
30.
Which scientist developed the model of the atom shown?
a)
Rutherford
b)
Bohr
c)
Chadwick
d)
Dalton
31.
This particle is found in the nucleus and has no charge
a)
Neutron
b)
Proton
c)
Electron
32.
Which particle contributes the negative charge to the atom?
a)
proton
b)
electron
c)
neutron
d)
nucleus
33.
Water is an element
a)
true
b)
false
34.
The measure of average kinetic energy of all the particles within an object is called ____________.
a)
temperature
b)
conduction
c)
radiation
d)
heat
35.
When a liquid changes into a solid
a)
sublimation
b)
freezing
c)
melting
d)
condensation
36.
Which state of matter has definite volume but not definite shape?
a)
Solid
b)
Liquid
c)
Gas
d)
Matter
37.
What does the dissolving?
a)
Solute
b)
solvent
c)
solution
d)
water
38.
Which element has 30 neutrons and 26 electrons?
a)
Iron
b)
Nickel
c)
Zinc
d)
Silver
39.
The two subatomic particles found in the nucleus are
a)
protons and neutrons
b)
protons and electrons
c)
electrons and neutrons
d)
protons and nucleotrons
40.
What is a valence electron?
a)
The sum of neutrons and protons.
b)
The # of electrons in the last shell.
c)
A type of bond.
d)
A popular compound.
41.
a)
Physical Change
b)
Chemical Change
42.
Jack has a rock. The rock has a mass of 14g and a volume of 2cm3. What is the density of the rock?
a)
7 mL
b)
7 g/cm3
c)
28 g/cm3
d)
1/7 g/cm3
43.
Mr. Norton estimates that it will take him 48 minutes to run 8 miles. It actually takes him 60 minutes. What was his percent error?
a)
20%
b)
12%
c)
25%
d)
8%
44.
What shape are S orbitals?
a)
Dumbell shaped
b)
Cloverleaf shaped
c)
Spherical shaped
d)
Hybrid structure
45.
What shape are D Orbitals?
a)
Hybrid structure
b)
Spherical shaped
c)
Dumbell shaped
d)
Cloverleaf shaped
46.
How many molecules are in 2.5 mol of NaCl?
a)
1.51x1023
b)
146
c)
4.15
d)
1.51x1024
47.
How many moles are in 16.94g of water?
a)
16.94 mol H2O
b)
0.9401 mol H2O
c)
305.3 mol H2O
d)
1.063 mol H2O
48.
A container with a volume of 893 L contains how many moles of air at STP?
a)
20003.2 L
b)
39.9 L
c)
22.4 L
d)
none of the choices
49.
Which of the following dimensional analysis setups will correctly convert 2.50 moles of sodium to grams of sodium?
a)
A
b)
B
c)
C
d)
D
50.
What is 50 C in Kelvin?
a)
223
b)
323
c)
100
d)
50
51.
A helium balloon with a volume of 1.8L at 1.0 atm and 293K is released into the air. As it rises, the pressure drops to 0.7atm and the temperature drops to 263K
a)
2.31 L
b)
0.43 L
c)
1.50 L
d)
2.57 L
52.
What volume is occupied by 2.00 mol of gas at 300 K and 1.25 atm of pressure?
PV=nRT
PV=nRT
a)
11.24 L
b)
26.52 L
c)
24.54 L
d)
39.41 L
53.
A helium nucleus with two protons and two neutrons is called a(n) ____.
a)
alpha particle
b)
electroscope
c)
beta particle
d)
gamma ray
54.
The splitting of a nucleus into smaller nuclei is
a)
fusion
b)
fission
c)
decay
d)
gamma radiation
55.
Turns litmus blue.
a)
Acids
b)
Bases
c)
Salts
d)
All
56.
Is the combustion of gasoline endothermic or exothermic?
a)
Endothermic
b)
Exothermic
57.
In an endothermic reaction, heat is ,,,
a)
taken in
b)
given out
58.
3KOH + H3PO4 --> K3PO4 + 3H2O
a)
Synthesis
b)
Decomposition
c)
Single displacement
d)
Double displacement
59.
C4H12 + O2 → CO2 + H2O
a)
Synthesis
b)
Combustion
c)
Single Replacement
d)
Double Replacement
60.
3Ca + 2AlCl3 --> 3CaCl2 + 2Al
a)
Synthesis
b)
Decomposition
c)
Single Displacement
d)
Double Displacement
61.
Name BCl3
a)
boron chloride
b)
boron (III) chloride
c)
boron trichloride
d)
boron chlorine
62.
Write the formula for Dinitrogen Pentaoxide.
a)
N5O2
b)
N2O5
c)
(N2O)5
d)
O5N2
63.
Write the formula for Dinitrogen Pentaoxide.
a)
N5O2
b)
N2O5
c)
(N2O)5
d)
O5N2
64.
copper(II) chloride
a)
CuCl2
b)
CuCl
c)
Cu2Cl
d)
Cu2Cl2
65.
AlBr3
a)
aluminum bromide
b)
aluminum tribromide
c)
aluminum bromine
d)
monoaluminum tribromide
66.
What is the formula for molarity?
a)
moles/grams
b)
moles/kilograms
c)
moles/milliliters
d)
moles/liters
67.
What does the solute dissolve in?
a)
solvent
b)
mixture
c)
solute
68.
What is the molarity of a solution made by adding 1.565 moles of PbNO3 to 500 mL?
a)
300. M
b)
31.3 M
c)
3.13 M
d)
1.56 M
69.
How many liters would you need to make a 1 M solution if you have 6 mol of Sodium Hydroxide?
a)
2
b)
3
c)
4
d)
6
70.
Which Lewis Dot structure best represents sulfur in ground state?
a)
A
b)
B
c)
C
d)
D
71.
According to the energy diagrams, this chemical reaction the process is ...
a)
endothemic, heat released
b)
endothermic, heat absorbed
c)
exothermic, heat released
d)
exothermic, heat absorbed
72.
Which particle diagram represents a partially melted liquid?
a)
A
b)
B
c)
C
d)
D
73.
What type of mixture results when sugar is completely dissolved in water?
a)
compound
b)
colloid
c)
solution
d)
suspension
74.
Which statement is true about mixtures?
a)
Mixtures must be separated physically
b)
Mixtures must be separated chemically
75.
Which statement is true about compounds?
a)
Compound must be separated physically
b)
Compound must be separated chemically
76.
If a window cleaner turns litmus paper blue, classify the type of substance...
a)
acid
b)
neutral
c)
base
77.
Which statement best describes when 2 substance form a covalent bond?
a)
2 non-metals combine because they share valence e-
b)
2 non-metals combine because they share IE
c)
2 metals combine because they share valence e-
d)
a metal and a non-metal combine because they share valence e-
78.
Which equation is correctly balanced?
a)
A
b)
B
c)
C
d)
D
79.
Who determined the center of the atom is very small and very dense? He used gold foil in his experiment.
a)
Milikan
b)
Rutherford
c)
Shrodinger
d)
Bohr
80.
Phase chases are _______. Heating curve for water is ______ reaction
a)
chemical change / endothermic
b)
chemical change / endothermic
c)
physical change / endothermic
d)
physical change / exothermic
Reset
