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Structure of an atom (LSS)

Total questions: 15

Worksheet time: 21mins

Name
Class
Date
1.

Subatomic particles with a negative charge

a)

Electrons

b)

Neutrons

c)

Protons

d)

Quarks

2.
Subatomic particles with a positive charge
a)
neutrons
b)
atomic mass
c)
protons
d)
isotopes
3.

This term is measures the total number of protons and neutrons in the nucleus:

a)

Subatomic Particles

b)

Atomic Number

c)

Atomic Mass

d)

Neutron Number

4.
Subatomic particles that are neutral in charge
a)
Neutrons
b)
Protons
c)
Nucleus 
d)
Electrons
5.
The smallest particle of an element that shows all the properties of that element.
a)
Subatomic Particles
b)
Atom
c)
Quarks
d)
Gluons
6.

A tiny but very dense, positively charged portion of the atom that holds most of the atomic mass

a)

Electron Shells

b)

Protons

c)

Neutrons

d)

Nucleus

7.
Which of the following particles has the smallest mass?
a)
neutron
b)
proton
c)
nucleus
d)
electron
8.
What is true about an atom?
a)
Most of the space in an atom is taken up by the nucleus
b)
Atoms are mostly empty space
c)
Atoms have no mass
d)
Electrons have much more mass that protons or neutrons.
9.
The term "neutral" means
a)
having only a little bit of charge
b)
having a positive charge
c)
having a negative charge
d)
having no charge at all
10.
Atoms are neutral because they have the same number of
a)
protons and neutrons
b)
protons and electrons
c)
electrons and neutrons
11.

Which of the following particles are located in the nucleus of the atom? (You may select more than one answer.)

a)

proton

b)

neutron

c)

electron

12.

Which of the following particles is located outside of nucleus of the atom?

a)

proton

b)

neutron

c)

electron

13.

The smallest particle of an element.

a)

Element

b)

Molecule

c)

Atom

14.

What is one way Neutrons are different from electrons?

a)

they both are negative

b)

neutrons have no charge, while electrons have a negative charge

c)

Both are in the nucleus( center of atom)

d)

Electrons are inside nucleus and neutrons are outside the nucleus.

15.

What part of the atom is indicated by the red sphere?

a)

nucleus

b)

electron cloud

c)

electrons

d)

neutrons