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Worksheetsuntitled
Total questions: 22
Worksheet time: 16mins
Name
Class
Date
1.
What are the basic building blocks for all matter?
a)
atoms
b)
elements
c)
compounds
d)
chemicals
2.
What do we call a substance consisting of a single atom?
a)
coefficient
b)
element
c)
compound
d)
molecule
3.
What do we call a chemical substance made up of 2 or more different types atoms bonded together?
a)
formula
b)
atom
c)
subscript
d)
compound
4.
All ____________ are made up of two or more atoms bonded together.
a)
atoms
b)
molecules
c)
electrons
d)
elements
5.
Bonds between atoms in a molecule form as a result of the sharing of?
a)
formulas
b)
electrons
c)
atoms
d)
chemicals
6.
When __________ form, the elements lose there individual chemical properties and take on new properties.
a)
compounds
b)
atoms
c)
subscript
d)
formula
7.
The smallest unbreakable unit of a compound is called
a)
subscript
b)
proton
c)
formula
d)
molecule
8.
A recipe for a chemical substance is called a ________ _________.
a)
coefficent
b)
chemical formula
c)
Oxygen
d)
atom
9.
H2O2← ?
This number tells the number of atoms present.
This number tells the number of atoms present.
a)
coefficient
b)
molecule
c)
subscript
d)
atom
10.
→2H2O
This number tells how many molecules are in a chemical equation.
This number tells how many molecules are in a chemical equation.
a)
coefficient
b)
subscript
c)
compound
d)
element
11.
2H2O
How many Hydrogen atoms are present?
How many Hydrogen atoms are present?
a)
2
b)
4
c)
1
d)
10
12.
2H2O
How many Oxygen atoms are present?
How many Oxygen atoms are present?
a)
2
b)
4
c)
1
d)
5
13.
2H2O
How many H2O molecules are present?
How many H2O molecules are present?
a)
1
b)
4
c)
2
d)
8
14.
Which subatomic particles are much smaller than the others and have a negative charge?
a)
protons
b)
neutrons
c)
electrons
15.
What does the nucleus of an atom contain?
a)
Electrons and neutrons
b)
Protons and neutrons
c)
Neutrinos and positrons
d)
DNA and RN
16.
H₂O is a compound molecule.
a)
TRUE
b)
FALSE
17.
O2 is a compound molecule.
a)
TRUE
b)
FALSE
18.
Are these molecules also compounds?
a)
YES
b)
NO
19.
Which of the following is NOT a compound?
a)
HCl
b)
Cl2
c)
NaCl
d)
CO2
20.
Which of the following represents an element molecule?
a)
H2O
b)
H2
c)
NaCl
d)
CaCO3
21.
This picture represents which of the following?
a)
elemental molecule
b)
compound molecule
22.
a)
Element
b)
compound molecules
c)
elemental molecules
d)
Mixture
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