Science Revision Test Game

Complete the word equation for photosynthesis.

​ (a)   + ​ (b)   ---> ​ (c)   + ​ (d)  

• carbon dioxide
• water
• oxygen
• glucose
• carbon monoxide
• nitrogen
• magnesium

Complete the word equation for photosynthesis.

​ (a)   + ​ (b)   ---> ​ (c)   + ​ (d)  

• carbon dioxide
• water
• oxygen
• glucose
• carbon monoxide
• nitrogen
• magnesium

The diagram shows a plant with variegated leaves. Some areas of the leaves are green and some are white. (b) This plant with variegated leaves does not grow as fast as another plant with only green leaves. Suggest a reason for this.

• The variegated leaves have less chlorophyll, reducing photosynthesis.

• The variegated leaves have more chlorophyll, increasing photosynthesis.

• The variegated leaves have the same amount of chlorophyll as green leaves.

• The variegated leaves have no effect on the plant's growth.

Complete the sentences to describe the pattern shown on the graph.

Between 0 and 48 seconds the volume of gas ​ (a)   .

After 48 seconds the reaction ​ (b)   .

• decreases
• starts
• stops
• increases

Mia decides to make a salt called calcium nitrate. Mia adds calcium carbonate to dilute nitric acid. The sentences A to E describe part of the method she uses. Complete sentences B and D.

B. The excess insoluble calcium carbonate is removed​ by ​ (a)  

D. The filtrate is heated until the first ​ (b)   appear.

• decreases
• starts
• filtration
• condensation
• evaporation
• crystal
• precipitation

Answer explanation

If you answer any of the following:

-salt

• - calcium nitrate

• - solid

It is correct!

Increasing the temperature will increase the rate of reaction.

Explain why.

Use ideas about particles and collisions in your answer.

Answer explanation

Increasing the temperature will increase the rate of reaction.

Explain why.

Use ideas about particles and collisions in your answer.

Answer explanation

Increasing the temperature will increase the rate of reaction because:

• particles move faster and collide more often

• particles move slower and collide less often

• the volume of gas decreases

• the acid concentration decreases

A class investigates food chains. They plan to sample insects in their school grounds using pitfall traps, pooters, and sweep nets. The class wants to estimate the number of insects in their school grounds. Which method can they use to make the estimate reliable?

• Use a single method for all samples

• Sample at different times and locations

• Only sample during the day

• Use only one type of trap

A class investigates food chains. They plan to sample insects in their school grounds using pitfall traps, pooters, and sweep nets. Carlos and Blessy use a pooter. What is one possible safety risk of using a pooter?

• Inhaling insects or debris

• Getting bitten by insects

• Damaging the pooter

• Disturbing the soil ecosystem