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Science Practice 2

Total questions: 25

Worksheet time: 15mins

Name
Class
Date
1.

Noble gases are inert because they have completed outer electron shells. Which of these elements isn't a noble gas?

a)

A. Helium

b)

B. Chlorine

c)

C. Argon

d)

D. Krypton

2.

The PH scale was invented by

a)

Robert Boyle

b)

Newton

c)

Sorensen

d)

Pascal

3.

Which is a mild corrosive base

a)

Baking soda

b)

Bleaching powder

c)

Plaster of Paris

d)

Gypsum

4.

The atomic mass of an element tells you

a)

The number of protons and neutrons

b)

The number of protons and electrons

c)

The number of neutrons and electrons

d)

The number of neutrons only

5.

The atomic number tells you

a)

The number of electrons

b)

The number of protons

c)

The number of neutrons

d)

The number of nucleons

6.

The electronic configuration of a magnesium ATOM is

a)

2, 8

b)

2, 8, 3

c)

2, 6

d)

2, 8, 2

7.

The electron configuration of a magnesium ION is

a)

2, 8, 6

b)

2, 8, 8

c)

2, 8, 2

d)

2, 8

8.

Elements from groups 1-3

a)

Are metals and lose electrons in a chemical reaction to become CATIONS

b)

Are metals and lose electrons in a chemical reaction to become ANIONS

c)

Are metals and gain electrons in a chemical reaction to become CATIONS

d)

Are metals and gain electrons in a chemical reaction to become ANIONS

9.

How would you name the following compound? MgS2

a)

Magnesium sulfur

b)

Dimagnesium sulfide

c)

Magnesium sulfide

d)

Magneside sulfide

10.

The energy of motion

a)

boiling

b)

density

c)

element

d)

Kinetic energy

11.

Temperature at which a substance changes from liquid to solid

a)

freezing point

b)

boiling point

c)

evaporation

d)

physical property

12.

Energy that moves from warmer substances to cooler ones until both are the same temperature

a)

kinetic energy

b)

heat

c)

electron cloud

d)

electrons

13.

baking soda is a/an

a)

alkaline

b)

acid

c)

salt

d)

oxide

14.
Which subatomic particles are located in the nucleus?
a)
Electrons only
b)
Electrons and neutrons
c)
Protons and electrons
d)
Protons and neutrons
15.
If a Carbon atom has 6 protons, how many electrons will it have?
a)
2
b)
4
c)
6
d)
8
16.
The mass number of an element that has18 protons, 18 electrons, and 19 neutrons is _____.
a)
12.5
b)
13
c)
25
d)
37
17.

What is the name of the element that is Superman's Planet?

a)

Neon

b)

Krypton

c)

Argon

d)

Radon

18.

What is Oxygen and Hydrogen used to make?

a)

Water

b)

Food

c)

Plants

d)

Pizza

19.
Which is a sign of a chemical reaction?
a)
chemical properties change
b)
a gas forms
c)
a solid forms
d)
physical properties change
20.
Define products
a)
The substance produced in a chemical reaction
b)
Another word for ions
c)
A description of a reaction
d)
Process in which atoms bond together
21.
What is a coefficient?
a)
Number of protons of that substance in a reaction
b)
Number of electrons of that substance in the reaction
c)
Number of units of that substance in the reaction
d)
Number of metallic bonds
22.

What is the property of water is shown in the picture?

a)

specific heat

b)

universal solvent

c)

capillary action

d)

surface tension

23.

How many Hydrogen atoms are in 4H2O?

a)

6

b)

8

c)

2

d)

4

24.

How many Magnesium atoms are in 10MgCl2?

a)

10

b)

5

c)

20

25.

Which group of elements is un-reactive?

a)

Noble Gases

b)

Inner transition metals

c)

Transition metals

d)

Alkaline-earth metals

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