End Of Year Exams

Question 1

What is the definition of a nutrient?

Answer 1

They are chemicals found in food

Question 2

What is the function of carbohydrates in our diet?

Answer 2

They give us energy

Question 3

What is the function of lipids in our diet?

Answer 3

They provide insulation and energy

Question 4

What is the function of proteins in our diet?

Answer 4

They allow growth and repair damaged muscles

Question 5

What is the function of vitamins in our diet?

Answer 5

Vitamin c is for healthy skin and gums and vitamin d is for healthy teeth

Question 6

What is the functions of minerals in our diet?

Answer 6

Iron helps make red blood cells and calcium is needed for healthy skin and bones

Question 7

What is the function of fibre in our diet?

Answer 7

It can improve cholesterol and blood sugar levels and can assist in preventing some diseases

Question 8

What is a balanced diet?

Answer 8

A balanced diet is when we take in the right amount of food and this can vary due to your age, gender and physical activity

Question 9

How could an unbalanced diet cause health issues?

Answer 9

In the short term it can contribute to stress, tiredness and our capacity to work and in the long term it could lead to being obese, tooth decay and high blood pressure

Question 10

Explain how different people need different amounts of energy using calculations and data to support my answer

Answer 10

Because the amount of work done = force x distance and this will be the amount of joules that you need which is energy

Question 11

Why does food need to be digested?

Answer 11

Because we have to break down the food into nutrients so they can all do their separate jobs

Question 12

How do enzymes affect the rate of digestion?

Answer 12

They speed up the rate of digestion and the breakdown of proteins, carbs and liquids because they are biological catalysts

Question 13

How do drugs affect people’s health and behaviour?

Answer 13

Different types of drugs do different things like painkiller which blocks nerve impulses and performance enhancer improves muscle development which makes you better at sports and other things

Question 14

How does alcohol affect people’s health and behaviour?

Answer 14

It slows down nerves and brain activity which can lead to a lack of self-control and the drug inside which is ethanol is the reason for these affects and your behaviour would be different because your reaction speed would have decreased

Question 15

What is the affect of nicotine, carbon monoxide and tar?

Answer 15

Nicotine is addictive and speeds up heart rate. Carbon monoxide reduces the amount of oxygen that the red blood cells can carry. Tar can cause cancer

Question 16

How can smoking cause disease?

Answer 16

It can cause cancer because of the tar and it can then spread through cells uncontrollably. Also emphysema which is a long term disease that usually causes shortness of breath due to over- inflation of the alveoli

Question 17

Define the term element

Answer 17

It is a substance that is made of 1 atom and cannot be broken down

Question 18

Where are metals and non-metals found on the periodic table?

Answer 18

Metals are on the left and non-metals are on the right

Question 19

What are the horizontal rows called?

Answer 19

Periods

Question 20

What are the vertical columns called?

Answer 20

Groups

Question 21

What is the other name for group 1?

Answer 21

Alkali metals

Question 22

What is the other name for group 2?

Answer 22

Alkaline earth metals

Question 23

What is the other name for group 7?

Answer 23

Halogens

Question 24

What is the other name of group 0?

Answer 24

Noble gases

Question 25

H

Answer 25

Hydrogen

Question 26

He

Answer 26

Helium

Question 27

Li

Answer 27

Lithium

Question 28

Be

Answer 28

Beryllium

Question 29

B

Answer 29

Boron

Question 30

C

Answer 30

Carbon

Question 31

N

Answer 31

Nitrogen

Question 32

O

Answer 32

Oxygen

Question 33

F

Answer 33

Fluorine

Question 34

Ne

Answer 34

Neon

Question 35

Na

Answer 35

Sodium

Question 36

Mg

Answer 36

Magnesium

Question 37

Al

Answer 37

Aluminium

Question 38

Si

Answer 38

Silicon

Question 39

P

Answer 39

Phosphorus

Question 40

S

Answer 40

Sulphur

Question 41

Cl

Answer 41

Chlorine

Question 42

Ar

Answer 42

Argon

Question 43

K

Answer 43

Potassium

Question 44

Ca

Answer 44

Calcium

Question 45

What is the pattern of the elements in group 1,7 and 0?

Answer 45

Group 1 has all metals, group 7 has 4 non metals and one metal and group 0 has all non metals

Question 46

Give an example of displacement

Answer 46

Zinc sulphate + aluminium = aluminium sulphate + zinc

Question 47

What is the difference between compounds and mixtures?

Answer 47

An element can't be broken down into other substances and compounds need chemical reactions to separate it

Question 48

What is solution?

Answer 48

When you mix solute and solvent together

Question 49

What does solubility mean?

Answer 49

How much solute is dissolved

Question 50

Why does temperature affect the amount of solute dissolved in a solution?

Answer 50

Because at a higher temperature there is more solute dissolved because the particles vibrate even more

Question 51

What does evaporation mean?

Answer 51

It's the process of turning liquid to vapour

Question 52

What does distillation mean?

Answer 52

It is the method used to separate solvent from a solution

Question 53

How can chromatography be used in different situations?

Answer 53

It can be used to separate mixtures of soluble substances

Question 54

What are all the different forms of energy?

Answer 54

Thermal, Light, GPE, Electrical, Sound, Kinetic

Question 55

What is the unit of energy?

Answer 55

Joules/kilojoules

Question 56

What is the law of conservation of energy?

Answer 56

It's the idea that it can be stored or transferred but not created or destroyed and the idea that the total energy has the same value before and after a change is called

Question 57

Give an example of how energy and temperature are different?

Answer 57

A swimming pool at 30°C is at a lower temperature than a cup of tea at 80°C. But the swimming pool contains more water, so it stores more internal energy than the cup of tea.