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WorksheetsAtoms, Periodic Table, Law of Conservation of Mass
Total questions: 11
Worksheet time: 8mins
Name
Class
Date
1.
Which 2 Subatomic Particles make up the Nucleus of atoms?
a)
Protons & Electrons
b)
Neutrons & Electrons
c)
Protons & Neutrons
2.
Neutrons have a __________ electrical charge.
a)
Positive (+)
b)
Negative (-)
c)
Neutral (No Charge)
3.
An atom has 10 protons and a mass of 18. It has __ neutrons
a)
10
b)
18
c)
28
d)
8
4.
What subatomic particles would you find in the nucleus of an atom?
a)
Protons only
b)
Protons and Neutrons
c)
Neutrons and Electrons
d)
Protons and Electrons
5.
Which letter represents a proton?
a)
A
b)
B
c)
C
d)
D
6.
Which letter represents a neutron?
a)
A
b)
B
c)
C
d)
D
7.
The substances at the beginning of a chemical equation are called the ____
a)
product
b)
yield
c)
chemical symbol
d)
reactants
8.
In the equation, 2Mg + O2 ---> 2MgO, which are the reactants?
a)
Mg and O
b)
MgO
c)
Mg and MgO
d)
O and MgO
9.
4 grams of hydrogen and 32 grams of oxygen will combine to form:
a)
36 grams of water
b)
28 grams of hydroxide
c)
32 grams of oxygen
10.
24 g of magnesium reacts with 38 g of fluorine to produce _____ g magnesium fluoride
a)
62
b)
38
c)
24
d)
14
11.
If you have 15 grams of Baking Soda and 20 grams of Vinegar as products, what would you expect the mass of your reactants to be?
a)
15 grams
b)
20 grams
c)
5 grams
d)
35 grams
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