Bridging topic

Question 1

What are the subatomic particles, their charges and their atomic mass?

Answer 1

Particle Charge Atomic mass
Neutron 0 1
Proton 1 1
Electron -1 0(almost)

Question 2

What are atoms?

Answer 2

Tiny particles that make up everything.

Question 3

What are compounds?

Answer 3

Two or more types of atoms chemically joined together.

Question 4

What is a mixture?

Answer 4

Multiple atoms and/or compounds mixed but not chemically joined together.

Question 5

What is the atomic number?

Answer 5

The number of protons

Question 6

How do you find out the number of neutrons?

Answer 6

atomic mass - atomic number

Question 7

Number of electrons =

Answer 7

number of protons

Question 8

What does the atomic mass show?

Answer 8

The number of neutrons and protons.

Question 9

What is an element?

Answer 9

One type of atom, on its own or joined to another atom of the same type.

Question 10

What are molecules?

Answer 10

Two or more atoms chemically bonded together.

Question 11

What is a chemical change?

Answer 11

A change in the physical and chemical properties when a new substance is formed.

Question 12

What is a chemical property?

Answer 12

A property which indicates how a substance reacts with something else. Matter will be changed into a new substance after the reaction.

Question 13

What is a physical change?

Answer 13

A change in size, shape or state where no new substances are formed.

Question 14

What is a physical property?

Answer 14

A property observed by senses and determined without destroying matter.

Question 15

What is the law of the conservation of mass?

Answer 15

reactants’ mass = products’ mass

Question 16

What is a quantity?

Answer 16

Something you can measure.

Question 17

What is a unit?

Answer 17

A fixed amount of quantity, it tells you what it has been measured in.

Question 18

What is gradient?

Answer 18

How steep or shallow a line is.

Question 19

The steeper the line…

Answer 19

the bigger the gradient.

Question 20

The shallower the line…

Answer 20

the lower the gradient.

Question 21

Lines going up have a ________ gradient.

Answer 21

positive

Question 22

Lines going down have a ________ gradient.

Answer 22

negative

Question 23

gradient =

Answer 23

change in y
___________
change in x

Question 24

What is the control variable?

Answer 24

The factors that stay the same though an experiment.

Question 25

What is the independent variable?

Answer 25

The variable you change to see what happens.

Question 26

What is the dependant variable?

Answer 26

The variable you measure.

Question 27

speed (m/s) =

Answer 27

distance (m)
___________
time (secs)

Question 28

distance (m) =

Answer 28

speed (m/s) x time (secs)

Question 29

time (secs) =

Answer 29

distance (m)
___________
speed (m/s)

Question 30

wavelength (m) =

Answer 30

wave speed (m/s)
______________
frequency (Hz)

Question 31

wave speed (m/s) =

Answer 31

wavelength (m) x frequency (Hz)

Question 32

frequency (Hz) =

Answer 32

wave speed (m/s)
______________
wavelength (m)

Question 33

mass (kg) =

Answer 33

density (kg/m³) x volume (m³)

Question 34

density (kg/m³) =

Answer 34

mass (kg)
__________
volume (m³)

Question 35

volume (m³) =

Answer 35

mass (kg)
____________
density (kg/m³)