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WorksheetsChemistry Challenge - Elements
Total questions: 35
Worksheet time: 18mins
Name
Class
Date
1.
Matter is anything that...
a)
has mass and takes up space
b)
is easy to understand
c)
is empty
d)
has weight and temperature
2.
A pure substance that cannot be separated into a simpler substance.
a)
element
b)
compound
c)
mixture
d)
solid
3.
The smallest unit of an element.
a)
Atom
b)
Element
c)
compound
d)
Mixture
4.
Has a positive charge.
a)
Photon
b)
Neutron
c)
Electron
d)
Proton
5.
Protons are found in the _______ of the atom.
a)
electron cloud
b)
nucleus
c)
top
d)
bottom
6.
Elements are arranged on the periodic table according to their....
a)
atomic mass
b)
atomic number
c)
size
d)
volume
7.
The atomic number of an atom is equal to the number of _____.
a)
atoms
b)
neutrons
c)
protons
d)
electrons
8.
The whole identity of the atom is based on how many _____ it has.
a)
friends
b)
electrons
c)
protons
d)
children
9.
All of the elements found in the known universe are on the ______.
a)
Periodic Table
b)
New science test
c)
Menu
d)
Multiplication chart
10.
Approximately how many elements have been found in the universe?
a)
90
b)
100
c)
110
d)
150
11.
A relatively ____ number of elements make up the Earth's crust, living organisms, atmosphere.
a)
large
b)
small
12.
A substance with the same composition throughout the matter.
a)
pure substance
b)
mixture
13.
Mostly formed of Nitrogen and Oxygen with a few other gases.
a)
Earth
b)
Moon
c)
Ocean
d)
Atmosphere
14.
Mostly Hydrogen and Oxygen in the form of water.
a)
earth
b)
space
c)
atmosphere
d)
oceans
15.
The main elements are Oxygen and Silicon that compose Earth material.
a)
air
b)
crust
c)
ocean
d)
space
16.
What is the symbol for Hydrogen?
a)
H
b)
He
c)
Hy
d)
Ho
17.
What is the symbol for Oxygen?
a)
Ox
b)
O
c)
Oy
d)
Og
18.
How many protons does Lithium have?
a)
1
b)
2
c)
3
d)
4
19.
What is the atomic number for Helium?
a)
1
b)
2
c)
3
d)
4
20.
Characteristics that can be observed without changing the identity of the substance.
a)
physical properties
b)
chemical properties
c)
physical changes
d)
chemical changes
21.
Size, density, hardness, color, state of matter are all _____ _____.
a)
physical properties
b)
chemical properties
c)
physical changes
d)
chemical changes
22.
Substances with a high luster, conduct heat and electricity well, and are malleable.
a)
metals
b)
nonmetals
c)
metalloids
d)
gases
23.
Substances with almost no luster, do not conduct well, and are brittle.
a)
metals
b)
nonmetals
c)
metalloids
d)
gases
24.
Substances that share properties of both metals and nonmetals.
a)
metals
b)
nonmetals
c)
metalloids
d)
mixtures
25.
Found on the far right side of the Periodic Table.
a)
nonmetals
b)
metals
c)
metalloids
d)
solids
26.
Found on the left side of the Periodic Table.
a)
nonmetals
b)
metalloids
c)
metals
d)
gases
27.
Found along the "stairstep" between the metals and nonmetals.
a)
Metals
b)
Nonmetals
c)
Metalloids
d)
Gases
28.
A relationship between mass and volume of an object.
a)
mass
b)
volume
c)
density
d)
size
29.
A way to measure the volume of a solid by placing it in a known amount of liquid.
a)
L x W x H
b)
Displacement
c)
Mass
d)
Density
30.
A change from solid to liquid.
a)
melting
b)
freezing
c)
condensing
d)
sublimating
31.
A change from liquid to gas.
a)
melting
b)
vaporizing
c)
freezing
d)
condensing
32.
A change from gas to liquid.
a)
evaporating
b)
condensing
c)
freezing
d)
melting
33.
A change from liquid to solid.
a)
evaporating
b)
condensing
c)
freezing
d)
melting
34.
The boiling and melting points of an element are both ____ ______.
a)
physical properties
b)
physical changes
c)
chemical properties
d)
chemical changes
35.
Two ore more substances together that are not chemically combined.
a)
element
b)
compound
c)
mixture
d)
mineral
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