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2019 1st Semester Review Part 3
Test Description: Part 3 of my semester review
Instructions: Answer all questions to get your test result.
1) The boiling point of chlorine is -34.6 degrees Celsius. This means that at room temperature chlorine is a ?
A
Liquid
B
Solid
C
Plasma
D
Gas
2) In order for a liquid to change states into a solid
A
energy must be added
B
the temperature must be constant
C
none of the above
D
energy must be removed
3) A physical change is NOT which of the following
A
d) a change that maintains the substances chemical identity
B
a) An irréversible change
C
c) a change to its state of matter
D
b) a change to shape or texture
4) Evidence of a chemical change taking place is NOT which of the following
A
d) develops a new solid formation (precipitate) such as a powder or crystals
B
b) gives off heat, light, or combusts
C
a) forms new gas bubbles and changes colors
D
c) freezing, melting or boiling
5) An Acid would have a PH of which of the following?
A
10
B
4
C
7.5
D
7
6) A Base would have a PH of which of the following?
A
7
B
4
C
6.5
D
10
7) A water would have a PH of which of the following?
A
2
B
10
C
7
D
4
8) What is a pure substance made of 2 or more elements that are combined chemically is called?
A
element
B
mixture
C
solid
D
compound
9) Pizza is an example of?
A
element
B
liquid
C
mixture
D
compound
10) Air is an example of?
A
element
B
homogeneous mixture
C
heterogeneous mixture
D
compounds
*select an answer for all questions
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