Required Practical Tips

Organise these options into the right variables

Groups:

(a) Independent

,

(b) Dependent

,

(c) Control

• Using the same measuring equipment

• Changing the type of substrate

• Using the same stopwatch

• Keeping the same temperature

• Varying the concentration of the reactants

• Measuring the volume of gas produced

• Modifying the duration of exposure to light

• Altering the pH level of the solution

• Adjusting the angle of the ramp

• Keeping the room lighting constant

• The person doing the experiment

• Same number of marble chips

• Observing the color change in the solution

• Recording the time taken for the reaction to occur

• Counting the number of bubbles produced

• Changing the distance of the light

Sort these command words!

• Give details about a process or graph

• Compare

• Give similarities and differences

• Evaluate

• Apply knowledge to an unfamiliar example

• Explain

• Say why something happens

• Describe

• Compare and give a final judgement

• Suggest

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

Measuring Cylinder

Tripod

Funnel

Beaker

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