Required Practical Tips

Organise these options into the right variables

Groups:

(a) Independent

,

(b) Dependent

,

(c) Control

• Changing the type of substrate

• Changing the distance of the light

• Adjusting the angle of the ramp

• Keeping the room lighting constant

• Varying the concentration of the reactants

• Altering the pH level of the solution

• Modifying the duration of exposure to light

• Recording the time taken for the reaction to occur

• Observing the color change in the solution

• Using the same stopwatch

• Measuring the volume of gas produced

• Same number of marble chips

• The person doing the experiment

• Using the same measuring equipment

• Keeping the same temperature

• Counting the number of bubbles produced

Sort these command words!

• Say why something happens

• Evaluate

• Apply knowledge to an unfamiliar example

• Explain

• Give details about a process or graph

• Suggest

• Compare and give a final judgement

• Describe

• Give similarities and differences

• Compare

The one we measure is the ​ (a)   ​ , the one we change is the ​ (b)   , the one we keep the same is the ​ (c)  

• dependent variable
• independent variable
• control variable

Volume is measured in ​ (a)  

• ml
• mm
• cm
• cm2

Label the equipment!

a

c

d

b

Beaker

Tripod

Funnel

Measuring Cylinder

Plot the following points. (x,y)

(0,0)

(3,2)

(6,4)

(8,6)

Plot the following points. (x,y)

(0,0)

(2,6)

(5,7)

(8,7)

Click the control variable

Click the dependent variable

Click the independent variable