WorksheetsIntroduction to Chemistry
Total questions: 26
Worksheet time: 13mins
Name
Class
Date
1.
_________________ has mass and takes up space.
a)
matter
b)
energy
2.
What holds atoms together in a molecule?
a)
physical bonds
b)
chemical bonds
3.
H2O, CO2, and C12H22O11 are all examples of chemical ______.
a)
properties
b)
formulas
4.
Soil (dirt), a salad, and sugar water are all examples of _______.
a)
mixtures
b)
compounds
5.
Volume is _____.
a)
length x width x height
b)
density x mass
6.
How do liquid water, ice, and water vapor differ from each other?
a)
They are different states of matter.
b)
They are different compounds.
7.
Baking Cookies
a)
Physical Change
b)
Chemical Change
8.
Tearing Paper
a)
Physical Change
b)
Chemical Change
9.
Distillation
a)
Physical Change
b)
Chemical Change
10.
Crushing a Can
a)
Physical Change
b)
Chemical Change
11.
Burning Wood
a)
Physical Change
b)
Chemical Change
12.
Burning Paper
a)
Physical Change
b)
Chemical Change
13.
Fireworks exploding in the sky and giving off light is an ________ change.
a)
endothermic
b)
exothermic
14.
Hardness, texture, color, density, and freezing point are examples of ____________________ properties of matter.
a)
Physical
b)
Chemical
15.
A _________ is a group of two or more atoms that are held together by chemical bonds.
a)
Mixture
b)
Molecule
16.
The fact that matter is not created or destroyed in any chemical or physical change is called the _______.
a)
Law of Conservation of Mass
b)
Atom Laws
17.
A volume of 25 milliliters is the same as a volume of ________ cubic centimeters.
a)
2.5
b)
25
c)
250
18.
A change that produces one or more new substances is called a _______ change.
a)
Chemical
b)
Physical
19.
A ________ is a single kind of matter that has a specific composition.
a)
Mixture
b)
Substance
20.
The smallest particle of an element is called an ________.
a)
Particle
b)
Atom
21.
A _______ is a mixture of minerals.
a)
Rock
b)
Substance
22.
A substance that undergoes a ______ change is still the same substance after the change.
a)
Physical
b)
Chemical
23.
What are the 3 parts of an atom?
a)
Proton, Neutron, Energy
b)
Proton, Neutron, Electron
24.
A proton has a ___ charge.
a)
Negative
b)
Positive
c)
Neutral, no charge
25.
An electron has a ___ charge.
a)
Negative
b)
Positive
c)
Neutral, no charge
26.
A neutron has a ___ charge.
a)
Negative
b)
Positive
c)
Neutral, no charge
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