Definitions

Question 1

Define element

Answer 1

Elements are the simplest substances which are made up of one type of atom

Question 2

Define compound

Answer 2

Made up of two or more different elements chemically bonded together

Question 3

If 2 or more elements are chemically joined, what will the suffix of compound name end in?

Answer 3

Ide

Question 4

If 3 or more elements are chemically joined and one of them is oxygen, what will the suffix of the compound name end in?

Answer 4

Ate

Question 5

What does
Date
Run
Bus
Stand for?

Answer 5

Dalton
Atom
Thomson
Electron

Rutherford
U
Nucleus

Bohr
U
Shells

Question 6

What does Pepsi and chicken nugget stand for?

Answer 6

Proton by Rutherford after bohr’s discovery
E
P
S
I

And

Chadwick
H
I
C
K
E
N

Neutron
U
G
G
E
T
S

Question 7

What does the mass number tell you?

Answer 7

The number or protons and neutrons

Question 8

What does the atomic number tell you?

Answer 8

The number or protons

Question 9

Define isotope

Answer 9

Isotopes are atoms of the same elements but with different numbers of neutrons in the nucleus
Isotopes have the same number of electrons and protons (same atomic number)
Isotopes have different amounts of neutrons (mass number)

Question 10

Define relative atomic mass

Answer 10

The relative atomic mass of an element is the average mass of atoms of that element, taking into account the mass and percentage abundance of each of its isotope

Question 11

What does the group number tell you?

Answer 11

Number of e- on the outer shell

Question 12

What does the period number tell you?

Answer 12

Number of e- shell

Question 13

What is ‘halogens displacements’?

Answer 13

Most reactive halogen displaces less reactive halogen from its salt

Question 14

What does inert mean?

Answer 14

Unreactive

Question 15

Define pure
Give examples

Answer 15

Contains one type of element or compound
E.g element - Ca,Li
E.g compound - H2O, CO2

Question 16

Define impure
Give examples

Answer 16

Contains more than one type of element or compound , not chemically bonded e.g mixture
E.g air,seawater, tap water

Question 17

Define temperature

Answer 17

It’s a measure of kinetic energy of particles

Question 18

Define boiling point

Answer 18

Temperature of a liquid turning into a gas

Question 19

Define melting point

Answer 19

Temperature of which a solid turns into a liquid

Question 20

Define solution

Answer 20

When one substance is dissolved in another

Question 21

Define solute

Answer 21

The substance that dissolves

Question 22

Define solvent
Give an example

Answer 22

The substance a solute dissolves in
E.g water

Question 23

Define dissolve

Answer 23

Particles separate and becomes completely mixed with the particles of the solvent

Question 24

Define soluble

Answer 24

It can dissolve

Question 25

Define insoluble

Answer 25

It can not dissolve