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WorksheetsATOMS 2.18
Total questions: 20
Worksheet time: 20mins
Name
Class
Date
1.
Which of the following represents an element?
a)
H2O
b)
H2
c)
NaCl
d)
CaCO3
2.
Salt has a chemical formula of NaCl. Salt is a...
a)
Compound
b)
Element
c)
Mixture
d)
None of the Above
3.
When two or more different types of atoms chemically combine, this is created:
a)
an element
b)
a mixture
c)
a compound
d)
a nucleus
4.
A combination of substances that are NOT chemically combined is called a(n)____________.
a)
mixture
b)
compound
c)
element
5.
An element is made up of only one kind of _________.
a)
nucleus
b)
molecule
c)
atom
d)
compound
6.
An electron has.....
a)
a negative charge.
b)
a neutral charge.
c)
a positive charge.
d)
both a positive and a negative charge.
7.
Is water an element or a compound or a...?
a)
Element
b)
Compound
c)
Mixture
d)
none of the above
8.
Water (H2O) freezing is an example of:
a)
A chemical change
b)
A physical change
c)
Creating a new substance
d)
Melting
9.
Carbon is considered an element while carbon dioxide is considered a compound. This is because carbon dioxide is ...
a)
used by humans for energy.
b)
made of two different elements.
c)
found on the Periodic Table.
d)
useful to human beings.
10.
Which of the following is NOT matter?
a)
air we breathe
b)
heat
c)
steam
d)
cows
11.
Most of any atom is filled with
a)
electrons
b)
empty space
c)
the nucleus
d)
protons
12.
Which of these has only has one type of atom in it?
a)
element
b)
compound
c)
molecule
d)
nucleus
13.
ALL matter is made of
a)
energy
b)
atoms
c)
compounds
d)
molecules
14.
Neutrons have a ____________________ charge.
a)
negative
b)
positive
c)
neutral
d)
yo mama
15.
Electrons are
a)
negative and inside the nucleus
b)
positive and outside the nucleus
c)
not in the atom at all
d)
negative and outside the nucleus
16.
Which one is found on the Periodic Table?
a)
Compounds
b)
Elements
c)
Mixtures
17.
Water is an example of this:
a)
Element
b)
Compound
c)
Solution
d)
Mixture
18.
What is a pure substance that contains only one type of atom?
a)
An element
b)
A mixture
c)
A compound
d)
A nucleus
19.
Copper has an atomic number of 29. This means it
a)
has 29 atoms
b)
weighs 29 grams
c)
has 29 protons
d)
has 29 neutrons
20.
What are the two most common elements found in the ocean?
a)
Carbon and Hydrogen
b)
Calcium and Silicon
c)
Hydrogen and Oxygen
d)
Salt and Water
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