General

Question 1

Why is food important?

Answer 1

Food is important because it give energy and helps your body and bones develop.

Question 2

What does a pregnant woman need in her diet?

Answer 2

Dairy products, fruit, vegetables, fish, meat, eggs, fat and carbohydrates are needed to provide all nutrients for the developing baby and her.

Question 3

How are elements and compounds different?

Answer 3

Elements contain only type of atom whilst compounds contain a combination of atoms.

Question 4

What is a salt?

Answer 4

A salt is any compound formed by the neutralisation of an acid by a base or alkali.

Question 5

What’s the rule of naming salts?

Answer 5

The name of a salt has two parts. The first part comes from the metal, metal oxide or metal carbonate. The second part comes from the acid.

Question 6

Which acid is used to make salts that have names ending in sulfate?

Answer 6

Sulfuric Acid

Question 7

What ion is present in nitric acid?

Answer 7

NO3

Question 8

Zinc oxide + nitric acid →

Answer 8

Zinc Nitrate

Question 9

Which two chemicals could you react to make ammonium chloride?

Answer 9

Ammonium chloride + water

Question 10

Calcium carbonate + hydrochloric acid →…

Answer 10

Calcium chloride

Question 11

What is the name of the precipitate made from the reaction between silver nitrate and sodium chloride?

Answer 11

Silver chloride

Question 12

Through what organ does air move into the lungs?

Answer 12

The windpipe

Question 13

What is the proper term for breathing?

Answer 13

Ventilation

Question 14

What are the tiny air sacs in the lungs called?

Answer 14

Alveoli

Question 15

What are the products of aerobic respiration?

Answer 15

Carbon dioxide and Water

Question 16

Where does respiration happen?

Answer 16

Mitochondria

Question 17

What reaction occurs in yeast?

Answer 17

Fermentation

Question 18

Which organ system helps us breathe?

Answer 18

Gas exchange system

Question 19

What does the trachea divide into?

Answer 19

Two bronchi

Question 20

What happens to the diaphragm when you breathe in?

Answer 20

Contracts and moves downwards

Question 21

Which of these is an adaptation of the lungs?

A) The alveoli have a huge surface area
B) Villi are only one cell thick
C) The alveoli have very dry walls

Answer 21

A) The alveoli have a huge surface area

Question 22

What are the products of photosynthesis?

Answer 22

Glucose and Oxygen

Question 23

What colour is chlorophyll?

Answer 23

Green

Question 24

Where does photosynthesis take place?

Answer 24

In the chloroplasts

Question 25

A green plant is usually a…

Answer 25

Producer

Question 26

What does a food chain always start with?

1) a top predator
2) a herbivore
3) a producer

Answer 26

3) a producer

Question 27

Which is the secondary consumer in this food chain:

grass -> grasshopper -> frog -> hawk

Answer 27

Frogs

Question 28

What does an omnivore eat?

Answer 28

Animals and Plants