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8 grade final quiz

Total questions: 25

Worksheet time: 17mins

Name
Class
Date
1.
Which is NOT a form of matter??
a)
atom
b)
element
c)
energy
d)
compound
2.
What particles make up atoms??
a)
Protons
b)
Neutrons
c)
Electrons
d)
All of the above
3.
What is the GREATEST number of valence electrons an atom can have in the 2nd shell?
a)
1
b)
3
c)
6
d)
8
4.
Substances listed of the left side of a chemical equation are the...
a)
Reactants
b)
Coefficients
c)
Products
d)
Precipitates
5.
A row across the Periodic Table is called...
a)
Family
b)
Section
c)
Period
d)
Group
6.
What are the particles that move rapidly in all directions in the space outside the nucleus called?
a)
Electrons
b)
Ions
c)
Protons
d)
Neutrons
7.
_______ and _______ are located inside of the nucleus.
a)
Electrons and Protons
b)
Protons and Neutrons
c)
Neutrons and Electrons
8.
If a Carbon atom has 6 protons, how many electrons will it have?
a)
2
b)
4
c)
6
d)
8
9.
The elements in a column of the periodic table...
a)
have similar atomic numbers
b)
start with the same letter
c)
have similar properties
d)
are not related in any way
10.
The elements in this group have 5 outer electrons.
a)
Group 5
b)
Group 1
c)
Group 18
d)
Group 15
11.

Substances that lose electrons easily and are oxidized in a chemical reaction are ____________.

a)

reducing agents

b)

coloring agents

c)

oxidizing agents

d)

neutralizing agents

e)

analytical agents

12.

During the process of reduction, _________________

a)

protons are lost.

b)

protons are gained.

c)

electrons are lost.

d)

electrons are gained

e)

neutrons are lost.

13.

The change of I‾ to I2 is ________________

a)

oxidation

b)

reduction

c)

neutralization

d)

Decomposition

e)

Combustion

14.

What is the oxidation number of Nitrogen in HNO3

a)

-7

b)

-5

c)

+5

d)

+7

e)

+2

15.

Find the oxidation number of Ca in CaH2

a)

-2

b)

-4

c)

+2

d)

+4

e)

0

16.
Acids react with
a)
water to produce bases and salts
b)
salts to produce bases and water
c)
neither bases, salts nor water
d)
bases to produce salts and water
17.

A substance is found to have the following characteristics:


Very bitter taste

Feels slippery to the touch

Produces OH- ions when dissolved in water


In what category would the substance be classified?

a)

acid

b)

base

c)

enzyme

d)

fatty acid

18.
Releases hydrogen in an aqueous solution.
a)
base
b)
strong base
c)
acid
d)
weak base
19.

Phenolophalein turns from clear to pink when the pH turns

a)

acidic

b)

basic

c)

saline

d)

ionic

20.

What completely ionizes in solution?

a)

Weak acids

b)

Strong acids

c)

Strong Salts

d)

Neutral salts

21.
Mg(OH)2
a)
magnesium hydroxide acid
b)
hydromagnesium acid
c)
magnesium oxygen hydride
d)
magnesium hydroxide
22.
Which of the following reactions produces calcium oxide?
a)
calcium and oxide
b)
calcium and water
c)
calcium and air
d)
calcium and oxygen
23.
How are metal oxides formed?
a)
When metals react with oxide.
b)
When metals react with water.
c)
When metals react with air.
d)
When metals react with oxygen.
24.

Which of the followings is an acidic oxide?

a)

SO2

b)

H2O

c)

CO

d)

ZnO

25.

Which oxide is able to react with HNO3?

a)

MgO

b)

CO2

c)

NO2

d)

CO

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