Chapter 1- Atomic Structure

Question 1

ATOM

Answer 1

a particle that cannot be broken down into smaller particles

Question 2

MOLECULE

Answer 2

Made up of atoms
(the same or different)
that are chemically
joined/bonded.

Question 3

ELEMENT

Answer 3

Made up of only one kind of atom. Can be made up of just atoms or of molecules

Question 4

COMPOUND

Answer 4

Made up of different atoms that are chemically joined/bonded

Question 5

MIXTURE

Answer 5

Made up of elements, compounds, or both that are mixed and can be separated as
the different elements and compounds are not joined/bonded to each other.

Question 6

ISOTOPES

Answer 6

Isotopes are atoms of the same element

which have the same number of protons but a different number of neutrons.

Question 7

CHEMICAL FORMULA

Answer 7

made up of element symbols and numbers
can tell you whether something is an element or compound and
how many atoms it is made of.

Question 8

NUCLEUS

Answer 8

The nucleus has most of the mass of
an atom, though it is only a very small part of it. It is located in the centre of the atom and contains the protons and neutrons.

Question 9

PROTONS

Answer 9

Protons are found in the nucleus of an atom. They have a positive charge (+1) and have the same mass as a neutron.

Question 10

NEITRONS

Answer 10

The nucleus holds the protons and neutrons. The neutron has no charge and is therefore neutral. It has a mass of 1.

Question 11

ELECTRONS

Answer 11

In shells around the nucleus is where the electrons are found. They have a negative charge (-1) and a mass of 1/1836.