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WorksheetsChemistry Pre-quiz
Total questions: 30
Worksheet time: 15mins
Name
Class
Date
1.
A positively charged particle is a(n)
a)
proton
b)
neutron
c)
electron
d)
positron
2.
The smallest unit of an element that can exist either alone or in combination with other such particles of the same or different elements is the
a)
electron
b)
proton
c)
neutron
d)
atom
3.
Atoms of the same element that have different masses are called
a)
moles
b)
isotopes
c)
nuclides
d)
neutrons
4.
An atom of calcium has 20 protons and 20 neutrons. What is its mass number?
a)
20
b)
40
c)
60
d)
80
5.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
6.
Particles in an atom that are neutral and have no charge are
a)
negatrons
b)
electrons
c)
neutrons
d)
protons
7.
What are the 3 particles that make-up the atom?
a)
protons, neutrons, and isotopes
b)
neutrons, isotopes, and electrons
c)
positives, negatives, and electrons
d)
protons, neutrons, and electrons
8.
What is a single particle of matter made up of with two or more atoms joined together?
a)
atom
b)
matter
c)
molecule
d)
physical matter
9.
Which is bigger, an atom or a molecule
a)
atom
b)
molecule
10.
This is a
a)
chemical symbol
b)
chemical sign
c)
chemical location
d)
chemical formula
11.
This tells us
a)
there are 2 hydrogens and one oxygen atom
b)
there are 2 atoms of water
c)
there are 2 molecules of water
d)
there are 2 oxygens and one hydrogen atom
12.
Anything that has mass and takes up space is
a)
energy
b)
mass
c)
matter
d)
atoms
13.
Which of the following is not a property of metals?
a)
brittle
b)
malleable
c)
lustrous
d)
conductive
14.
Which is not an example of chemical changes
a)
Burning Wood
b)
Dyeing Hair
c)
Digesting Food
d)
Chopping wood
15.
Which of the following is evidence of a chemical reaction?
a)
fizzing
b)
water changing to ice
c)
saltwater
d)
paper being cut in half
16.
Which term below refers to an atom that "crumbles" away particles and energy at a consistent rate over time?
a)
polar
b)
nonpolar
c)
ionic
d)
radioactive
17.
ph 7.0 : neutral :: ph 8.8 : _______ ?
a)
acid
b)
base
c)
neutral
d)
polar
18.
Which of the following is NOT a compound?
a)
CO2
b)
H20
c)
O2
d)
C6H12O6
19.
What is the first step of the scientific method?
a)
reaching a conclusion
b)
making a observation
c)
stating a theory
d)
conducting an experiment
20.
A hypothesis is
a)
observation recorded from an experiment
b)
testable explanation
c)
a proposed explanation or reason for what is observed
d)
thoroughly tested model
21.
A series of steps designed to help you solve problems and answer questions is
a)
hypothesis
b)
experiment
c)
observation
d)
scientific method
22.
You are heating a substance in a test tube. Always point the open end of the tube
a)
away from all people
b)
toward another classmate
c)
toward your lab partner
d)
toward yourself
23.
What do you do if chemicals get on your skin?
a)
i don't know ask Siri!
b)
just leave it alone
c)
call your mother in havoc
d)
Wash with water for 15 minutes and notify teacher
24.
Which of the following is an example of a chemical change?
a)
freezing water to make ice
b)
boiling water to make steam
c)
making salt water from salt and water.
d)
separating water into hydrogen and oxygen.
25.
Matter includes all of the following except
a)
air
b)
smoke
c)
light
d)
water vapor
26.
Which liquid is the most dense?
a)
oil
b)
water
c)
syrup
d)
plastic bottle
27.
An example of a solution is ___
a)
sugar and water
b)
sand and water
c)
milk
d)
whipped cream
28.
DIFFERENT kinds of atoms chemically combined to form a substance are
a)
Mixture
b)
Element
c)
Compound
d)
Substance
29.
This type of element is located on the right side of the periodic table.
a)
Metal
b)
Metalloid
c)
Non-Metals
d)
Solid
30.
When a substance is broken apart or when substances are combined and at least one new substance is formed
a)
chemical equation
b)
chemical formulas
c)
balanced chemical equation
d)
chemical reaction
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