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WorksheetsChemistry TP Review
Total questions: 29
Worksheet time: 20mins
Name
Class
Date
1.
What is the same within each group on the periodic table?
a)
the number of protons
b)
the number of electrons
c)
the number of atoms
d)
the number of valence electrons
2.
A combination of substances that are not chemically combined is called a(n)____________.
a)
mixture
b)
compound
c)
physical
3.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
4.
Which solution releases H+ in solution?
a)
Base
b)
Acid
c)
Buffer
d)
Water
5.
A solution with a pH of 3.6 would be...
a)
Acid
b)
Base
c)
Neutral
d)
Acid and Base
6.
A solution with a pH of 9.5 would be...
a)
Acid
b)
Base
c)
Neutral
d)
Acid and Base
7.
A solution with a pH of 7.0 would have...
a)
more H ions than OH ions
b)
more OH ions than H ions
c)
equal number of H and OH ions
d)
None of these.
8.
In the equation, 2Mg + O2 ---> 2MgO, which are the reactants?
a)
Mg and O
b)
MgO
c)
Mg and MgO
d)
O and MgO
9.
Which equation obeys the law of conservation of mass?
a)
H2 + O2 ------> H20
b)
C + 2H2 ----> CH4
c)
2Fe2O3 ------> 2O2 + 4Fe
10.
Name ALL the evidences that show a chemical reaction has occurred.
a)
color, gas, light
b)
light, precipitate, odor,
c)
color, gas, light, temperature, precipitate
d)
temperature, smell, light, conductivity, taste
11.
Which coefficient will balance the following equation?
Zn + ___ HCl --> ZnCl2 + H2
Zn + ___ HCl --> ZnCl2 + H2
a)
2
b)
6
c)
4
d)
3
12.
What is a coefficient?
a)
The large number to the left of a chemical formula.
b)
The small number on the right of the chemical symbol.
c)
The small number on the left of a chemical symbol
d)
The large number at the end of a chemical formula
13.
What is the total number of atoms present in 5Na3PO4?
a)
5
b)
40
c)
55
d)
60
14.
What two quantities are needed to calculate density?
a)
weight and mass
b)
mass and volume
c)
temperature and mass
d)
volume and temperature
15.
Which of the following is a sign that a chemical reaction has occurred?
a)
change in shape
b)
melting
c)
formation of a gas
d)
dissolving
16.
Is melting butter for popcorn a chemical or physical change?
a)
chemical
b)
physical
17.
Is bleaching your hair a physical or chemical change?
a)
physical
b)
chemical
18.
A change in the size, shape, or state of matter.
a)
chemical change
b)
physical change
c)
chemical reaction
d)
electron change
19.
Which of the following is NOT an example of a physical change?
a)
crumpled paper
b)
pencil sharpening
c)
shrunken clothing
d)
sour milk
20.
blue berry muffin
a)
heterogeneous mixture
b)
homogeneous mixture
c)
compound
21.
Pepsi
a)
Heterogeneous mixture
b)
homogeneous mixture
c)
compound
22.
Can only be separated by chemical means.
a)
element
b)
mixture
c)
compound
23.
It is considered a solution.
a)
Heterogeneous
b)
Homogeneous
c)
Pure substance
24.
What elements generally make a covalent bond?
a)
metal and nonmetal
b)
2 or more nonmetals
c)
metal
d)
none of the above
25.
What elements generally make an ionic bond?
a)
metal and nonmetal
b)
2 or more nonmetals
c)
metal
d)
none of the above
26.
Predict the bond that will form between Sr and S.
a)
Ionic
b)
Covalent
27.
Predict the bond that will form between Se and Cl.
a)
Ionic
b)
Covalent
28.
An ionic bond forms when
a)
Valence electrons are shared
b)
a sea of mobile electrons surround the cations
c)
valence electrons are transferred between atoms
d)
none of the above
29.
In chemical compounds, covalent bonds form when
a)
the electronegativity difference between two atoms is very large.
b)
electrons are completely transferred between two metals.
c)
pairs of electrons are shared between two nonmetal atoms.
d)
two nonmetal atoms are attracted to each other by opposite charges.
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