SAS

Question 1

Communicable

Answer 1

Can be passed on

Question 2

Non communicable

Answer 2

Can’t be passed on

Question 3

4 micro organisms

Answer 3

Fungi,bacteria, virus,protist

Question 4

4 structures on a microbe

Answer 4

Cell wall , cell membrane ,cytoplasm,genetic material

Question 5

Microbes are transmitted through

Answer 5

Mouth , eyes , nose ,ears , cuts , genitals

Question 6

Defences mechanisms

Answer 6

White blood cells , scabs , immune system , vaccines , washing hands

Question 7

Pathogens spread

Answer 7

Coughing , sneezing , not washing hands , salmonella , insect bites

Question 8

Smallest pathogen

Answer 8

Virus

Question 9

Bacterial infection are treated with

Answer 9

Antibiotics

Question 10

What are the types of stored energy?

Answer 10

Kinetic, gravitational potential (GPE), elastic, thermal, chemical, nuclear.

Question 11

What are the types of energy?

Answer 11

Light, sound, thermal, kinetic, gravitational potential energy (GPE), electrical,nuclear,chemical,elastic

Question 12

What is the unit for energy?

Answer 12

Joules.

Question 13

What is the law of conservation of energy?

Answer 13

Energy cannot be created or destroyed, only transferred.

Question 14

How is efficiency calculated?

Answer 14

Efficiency = (useful energy out / total energy in) x 100.

Question 15

What is current in a circuit?

Answer 15

The flow of electrons around a circuit.

Question 16

What happens in a series circuit if one bulb breaks?

Answer 16

The circuit will not work.

Question 17

What happens in a parallel circuit if one bulb breaks?

Answer 17

The circuit will still work.

Question 18

What is potential difference?

Answer 18

Potential difference is voltage (V).

Question 19

What is Ohm’s Law?

Answer 19

Resistance = Voltage / Current (A).

Question 20

What goes into and out of a tv

Answer 20

Electricity-tv-light sound and heat

Question 21

Where are non-metals located on the periodic table?

Answer 21

Non-metals are located on the right side above the stairs.

Question 22

Where are metals located on the periodic table?

Answer 22

Metals are located on the left, middle under the stairs.

Question 23

What are the properties of metals?

Answer 23

Metals are solid, dense, strong, malleable, shiny, and good conductors.

Question 24

What is an alloy?

Answer 24

An alloy is a mixture of two or more metals together. It is harder and stronger than pure metals.

Question 25

What is the reaction of metal with water?

Answer 25

Metal + water → metal hydroxide + hydrogen.

Question 26

What causes iron to rust?

Answer 26

Iron rusts due to the presence of oxygen.

Question 27

What is rust?

Answer 27

Rust is iron oxide formed when water attacks metal.

Question 28

What is sacrificial protection?

Answer 28

Sacrificial protection is a corrosion technique that protects less reactive metals with more reactive substances.

Question 29

What is the reaction of metal with oxygen?

Answer 29

Metal + oxygen → metal oxide.

Question 30

What is a displacement reaction?

Answer 30

A displacement reaction occurs when a more reactive element displaces or pushes out a less reactive element.

Question 31

What is an ore?

Answer 31

An ore is a rock containing metals.

Question 32

Where are most metals found?

Answer 32

Most metals are found as oxides, which are compounds with oxygen.

Question 33

What is oxidation?

Answer 33

Oxidation is a chemical reaction that gains oxygen and loses hydrogen.

Question 34

What is reduction?

Answer 34

Reduction is the removal of oxygen.

Question 35

What is the reactivity series?

Answer 35

The reactivity series is: Potassium, sodium, lithium, calcium, magnesium, carbon, zinc, iron, tin, lead, hydrogen, copper, silver,gold , platinum

Question 36

What type of salt is produced from hydrochloric acid?

Answer 36

Chloride salt

Question 37

What type of salt is produced from sulfuric acid?

Answer 37

Sulphate salt

Question 38

What type of salt is produced from nitric acid?

Answer 38

Nitrate salt

Question 39

What is the reaction of a metal with an acid?

Answer 39

Salt + hydrogen

Question 40

What is produced when a metal oxide or hydroxide reacts with an acid?

Answer 40

Salt + water

Question 41

What is produced when a metal carbonate reacts with an acid?

Answer 41

Salt + water + carbon dioxide

Question 42

What is the pH range for strong acids?

Answer 42

1 - 3

Question 43

What is the pH range for weak acids?

Answer 43

4 - 6

Question 44

What is the pH of a neutral solution?

Answer 44

7

Question 45

What is the pH range for weak alkalis?

Answer 45

8 - 10

Question 46

What is the pH range for strong alkalis?

Answer 46

11 - 14

Question 47

What is the formula for speed?

Answer 47

Speed = distance / time

Question 48

What does a forwards movement represent on a graph?

Answer 48

A forwards movement is represented by a diagonal line.

Question 49

What does staying still represent on a graph?

Answer 49

Staying still is represented by a horizontal line.

Question 50

What does a steep diagonal line indicate?

Answer 50

A steep diagonal line indicates a high speed.

Question 51

How is speed represented in terms of a graph?

Answer 51

Speed = gradient (y-axis / x-axis)

Question 52

What is stopping defined as?

Answer 52

Stopping = Thinking + Braking (brain + car)

Question 53

What factors can affect stopping?

Answer 53

Factors include alcohol, ice, drugs, and raining.

Question 54

What is contact force?

Answer 54

Contact force involves friction.

Question 55

What are examples of non-contact forces?

Answer 55

Non-contact forces include gravity, up thrust, tension, magnetic, air, drag, and electrostatic.

Question 56

What is the formula for moments?

Answer 56

Moments = force x distance