Homework Practice

Printable assignment

Atomic Starter: Particles Inside Matter

Section A: Atoms as Basic Units

Question 1mcq

An atom is best described as:

A.A type of tissue

B.The basic unit of an element

C.A cell organelle

D.A mixture of many compounds

Question 2mcq

Atoms of the same element have the same:

A.Atomic number

B.Physical size only

C.Number of neutrons always

D.Mass number always

Question 3mcq

Different elements differ mainly in their number of:

A.Electrons only in ions

B.Shells always

C.Neutrons only

D.Protons

Question 4mcq

Which subatomic particle has negative charge?

A.Neutron

B.Proton

C.Electron

D.Nucleus

Question 5mcq

Which subatomic particle has no charge?

A.Electron

B.Neutron

C.Proton

D.Ion

Question 6mcq

The nucleus contains:

A.Protons and neutrons

B.Only empty space

C.Only electrons

D.Only shells

Section B: Comparing Protons, Neutrons and Electrons

Question 7mcq

Protons are found in the:

A.Cell wall

B.Outer shells only

C.Cytoplasm

D.Nucleus

Question 8mcq

Electrons are found in:

A.Only in neutrons

B.Inside protons

C.Shells around the nucleus

D.Only outside atoms as cells

Question 9mcq

The relative mass of an electron is:

A.Greater than proton

B.Very small compared with proton or neutron

C.Same as full atom always

D.Zero charge means zero mass

Question 10mcq

A neutral atom has equal numbers of:

A.Protons and electrons

B.Protons and neutrons always

C.Shells and neutrons

D.Neutrons and electrons always

Question 11mcq

If an atom has 11 protons and is neutral, it has:

A.22 electrons

B.12 electrons

C.10 electrons

D.11 electrons

Question 12mcq

An atom with 17 protons belongs to the element with atomic number:

A.18

B.7

C.17

D.34