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Worksheets7th chemistry
Total questions: 10
Worksheet time: 6mins
Name
Class
Date
1.
How many Elements are in the compound C2H8O ?
a)
2
b)
1
c)
3
d)
0
2.
How many total atoms are in the compound C2H8O ?
a)
11
b)
2
c)
8
d)
1
3.
How many atoms of Hydrogen are in this compound
a)
1
b)
2
c)
3
d)
4
4.
A subscript is the small number below a(n) ________ that tells the number of _______ of that element.
a)
element symbol; atoms
b)
atom; element symbol
c)
subscript; protons
d)
compound; elements
5.
The law that states the total amount of matter cannot be created nor destroyed?
a)
law of electricity
b)
law of destruction of mass
c)
Law of conservation of matter
d)
law of relative matter
6.
How many Magnesium are in 10MgCl2?
a)
10
b)
5
c)
20
7.
How many atoms of Oxygen are in this compound?
a)
1
b)
2
c)
3
d)
4
8.
A short easy way to show a chemical reaction
a)
chemical notation
b)
chemical equation
c)
chemical reaction
d)
chemical chart
9.
These are the compounds you have at the beginning of the reaction
a)
products
b)
reactants
10.
What is the right part of a chemical equation called...
2H2 + O2 --> 2H2O
2H2 + O2 --> 2H2O
a)
Reactants
b)
Products
c)
Yields
d)
Chemical Equation
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