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WorksheetsChemistry
Total questions: 30
Worksheet time: 29mins
Name
Class
Date
1.
Which particle does not contribute mass to the atom?
a)
Proton
b)
Neutron
c)
Electron
d)
Nucleus
2.
Which particle contributes the negative charge to the atom?
a)
proton
b)
electron
c)
neutron
d)
nucleus
3.
Most of the mass in an atom is made up of _____________________?
a)
protons and electrons
b)
protons and neutrons
c)
neutrons and electrons
d)
electrons and quarks
4.
Water is an element?
a)
true
b)
false
5.
What cannot be broken down into other substances?
a)
Compound
b)
Mixture
c)
Solids
d)
Element
6.
What is made up two or more elements that are chemically combined?
a)
Element
b)
Mixture
c)
Compound
d)
Solids
7.
How many elements are represented in the compound?
Na2CO3
Na2CO3
a)
1
b)
2
c)
3
d)
4
8.
Which of the following is not a compound?
a)
HCl
b)
Cl
c)
NaCl
d)
CO2
9.
A combination of substances that are not chemically combined is called a(n)____________.
a)
mixture
b)
compound
c)
physical
10.
_____ small particles that make up most types of matter on Earth.
a)
compounds
b)
atoms
c)
mixtures
d)
elements
11.
The blue numbers in the image below are called ___________.
a)
compounds
b)
coefficients
c)
subscripts
d)
chemical formulas
12.
How many atoms are there TOTAL in:
H2SO4
H2SO4
a)
6
b)
5
c)
7
d)
3
13.
Which of the following is an example of sublimation?
a)
Dry Ice
b)
Water boiling into steam
c)
Ice cream melting
d)
Water freezing into ice
14.
Any change in the state of matter of a substance is a...
a)
Physical Change
b)
Chemical Change
15.
Chemical or Physical? Glass breaking into tiny shards
a)
Chemical Change
b)
Physical Change
16.
Physical or Chemical Change? Iron rusts
a)
Physical Change
b)
Chemical Change
17.
At higher temperatures
a)
particles in an object have less energy
b)
particles in an object move faster
c)
a gas contracts
18.
Boiling
a)
liquid to gas
b)
gas to solid
c)
gas to liquid
d)
solid to liquid
19.
Which state of matter has a definite shape?
a)
solid
b)
liquid
c)
gas
20.
Particles of a liquid
a)
are tightly packed together and stay in a fixed position.
b)
have no viscosity.
c)
decrease in volume with increasing temperature.
d)
are free to move around one another but still touch.
21.
_____ - only has one capital letter.
a)
Element
b)
Compound
22.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
23.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
24.
What is sugar (C6H12O6)?
a)
element
b)
compound
c)
mixture
25.
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
26.
Is melting butter for popcorn a chemical or physical change?
a)
chemical
b)
physical
27.
The air is a _________.
a)
element
b)
mixture
c)
compound
d)
energy
28.
Examples are diamonds (C) and Uranium (U)
a)
elements
b)
mixtures
c)
compounds
29.
What is H2SO4
made up of?
made up of?
a)
2 hydrogen, 1 sulfur, 4 oxygen
b)
1 hydrogen, 2 sulfur, 4 oxygen
c)
2 hydrogen & 4 sodium
d)
1 hydrogen & 6 sodium
30.
In general, metals are _____.
a)
poor conductors of heat
b)
brittle
c)
poor conductors of electricity
d)
good conductors of heat
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