1.Formulate a hypothesis for this investigation

Question

2.State the aim of this investigation
3.
a)Independent variable
b)Dependent variable
c)Controlled variable
4.State methods and the control

Answer 1

See the Related Questions below.

Answer 2

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Answer 3

1.if the air contains carbon dioxide the lime water is going to turn milky
2.To determine whether expired air contains carbon dioxidr

Answer 4

1.if the air contains carbon dioxide the lime water is going to turn milky
2.To determine whether expired air contains carbon dioxide

Answer 5

The dependent variable is the same amount of lime water, the independent variable is the colour changer of the lime water. The variable is the mouthpieces used

Answer 6

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