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WorksheetsChemistry Test 2 Review
Total questions: 25
Worksheet time: 13mins
Name
Class
Date
1.
cannot be chemically broken down into simpler substances and are primary constituents of matter
a)
Elements
b)
Compounds
c)
Subscripts
d)
Coefficients
2.
a substance formed when two or more chemical elements are chemically bonded together.
a)
Element
b)
Compound
c)
Subscript
d)
Coefficient
3.
the small number in a chemical formula that represents atoms
a)
Element
b)
Compound
c)
Subscript
d)
Coefficient
4.
Box X is representative of
a)
Elements
b)
Compounds
c)
Mixtures
d)
Solutions
5.
Box Y is representative of
a)
Elements
b)
Compounds
c)
Mixtures
d)
Solutions
6.
The number 2 is the
a)
Element
b)
Compound
c)
Subscript
d)
Coefficient
7.
Which element makes up the largest percentage of the human body?
a)
Oxygen
b)
Nitrogen
c)
Hydrogen
d)
Water
8.
Which of these grouping of elements could have the characteristic of luster (shiny)?
a)
Metal
b)
Nonmetal
c)
metalloids
d)
Both metals and metalloids
9.
Which of these grouping of elements could have the characteristic of brittle?
a)
Metal
b)
Nonmetal
10.
Which of the following is a good conductor of heat?
a)
Metal
b)
Nonmetal
c)
Metalloid
11.
Which of these is a property of metals?
a)
It's malleable
b)
It can't conduct electricity
c)
They are used in food
d)
It's very brittle
12.
All of the following would classify an element as a metal except?
a)
Dull
b)
Luster
c)
Malleable
d)
Hard
13.
What element in Group 1 is not a metal but a nonmetal?
a)
Helium
b)
Lithium
c)
Hydrogen
d)
Oxygen
14.
Which element makes up the largest percentage of Earth's atmosphere?
a)
Oxygen
b)
Nitrogen
c)
Hydrogen
d)
Water
15.
Photosynthesis is an example of a
a)
physical change
b)
chemical change
16.
Is burning wood a chemical or physical change?
a)
chemical
b)
physical
17.
Adding baking soda and vinegar together and it fizzes and creates carbon dioxide.
a)
Chemical
b)
Physical
18.
A change in the size, shape, or state of matter.
a)
chemical change
b)
physical change
c)
chemical reaction
d)
electron change
19.
What is the atomic mass?
a)
13
b)
27
c)
26
d)
Al
20.
The large number at the beginning of a chemical formula that shows the number of molecules
a)
Element
b)
Compound
c)
Subscript
d)
Coefficient
21.
2H2O
The large number 2 is the
The large number 2 is the
a)
Element
b)
Compound
c)
Subscript
d)
Coefficient
22.
What is the chemical formula?
a)
2CH6
b)
C2H6
c)
2C2H6
d)
C2H3
23.
Choose the correct chemical formula.
a)
5H2
b)
H10
c)
10H
d)
2H5
24.
N2H4CO2N
How many Nitrogen atoms are present?
How many Nitrogen atoms are present?
a)
2
b)
3
c)
4
d)
1
25.
Choose the element:
a)
H2O
b)
H2
c)
HO2
d)
OH
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