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Atoms and molecules

Total questions: 23

Worksheet time: 14mins

Name
Class
Date
1.
Which part of an atom is POSITIVELY charged?
a)
protons
b)
neutrons
c)
electrons
d)
atoms
2.

What is the picture displayed?

a)

Carbon Dioxide

b)

Water

c)

Gasoline

d)

Liquid Nitrogen

3.
Particles in an atom that are neutral and have no charge are 
a)
negatrons 
b)
electrons 
c)
neutrons 
d)
protons 
4.
When you heat matter, what happens to the atoms and molecules?
a)
they move faster 
b)
they move slower
c)
they stop moving
d)
they stay the same
5.
Elements are made of 
a)
many types of atoms 
b)
the periodic table
c)
one type of atom 
d)
molecules 
6.
Two or more atoms chemically bonded together are called a
a)
atom
b)
element
c)
molecule
d)
mixture
7.
Carbon dioxide (CO2) contains how many atoms of oxygen?
a)
0
b)
1
c)
2
d)
3
8.

Atomicity is ......

a)

the number of atoms present in an element.

b)

the number of atoms present in a molecule.

c)

atomic mass

d)

none of the above

9.

The bonding capacity of an element is called......

a)

Atomic number

b)

Atomic Mass Unit

c)

Molecular mass

d)

Valency

10.

Who proposed Law of Conservation of mass?

a)

Proust

b)

Dalton

c)

Democrats

d)

Lavoisier

11.

Who proposed Law of constant proportion?

a)

John Dalton

b)

Joseph L Proust

c)

Lavoisier

d)

Neil's Bohr

12.

The Latin name of Potassium is......

a)

Natrium

b)

Kalium

c)

Plum bum

d)

None of the above

13.

The symbol of Gold is......

a)

G

b)

Ag

c)

Au

d)

Go

14.

'S' is the symbol of ....

a)

Silicon

b)

Sulfur

c)

Sodium

d)

Above all

15.

H2SO4 Is the chemical formula of......

a)

Hydrogen Chloride

b)

Sulfuric acid

c)

Nitric acid

d)

Carbonic acid

16.

What is the chemical symbol for the element mercury?

a)

Hg

b)

Merc

c)

MeC

d)

MY

17.

What is an ion?

a)

a charged atom

b)

an atom with different neutrons

c)

atoms with no protons

d)

atoms with no electrons

18.

The chemical symbol for nitrogen gas is

a)

ni

b)

N2

c)

N

d)

NI

19.

who presented the atomic theory

a)

Albert Einstein

b)

John Dalton

c)

Robert Hooke

d)

Marie Curie

20.

atomic radius is measured in

a)

nanometers

b)

kilometers

c)

meters

d)

centimeters

21.
A substance that conducts heat and electricity well and is malleable
a)
Metal
b)
Non-Metal
c)
Element
d)
Malleable
22.
Atoms that have the same number of protons but different numbers of neutrons.
a)
Isotopes
b)
Neutron
c)
Proton
d)
Atomic Mass
23.
A change directly from the solid to the gaseous state without becoming liquid.
a)
Sublimation
b)
Submarine
c)
Subatomic 
d)
Molecule

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