Yr 7 APP – LAT AF 4b

Using Investigative ApproachesAIMPlan an investigation, collect evidence safely and present the data appropriately.

Investigate which indigestion tablet is the best.

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Variables

Which antacid tablet is best?

Discuss which variables you will Control (keep the same)Change (Independent)Measure (Dependent)

- volume of acid- type of tablet- amount of indicator- volume of acid- volume of water- pH of acid after reaction with tablet.

Identifying and Controlling Risk

Crushing antacid tablets

Handling acid Handling glassware

Risks to you

Risks to others

How you will control the risks

Discuss the risks involved with investigating the effect of different antacids on hydrochloric acid.

Complete the table.

Variables that are difficult to control.Discuss and decide which variables are the easiest and most difficult to control when investigating the effectiveness of different antacids on the

neutralisation of hydrochloric acid.

Volume of acid

Mass of tablet

Amount of antacid left

on filter paper

Amount of

indicator

Concentration of acid

Antacid ingredients

Size of tablet

EASY TO

CONTROL

DIFFICULTTO

CONTROL

Time to dissolve

Temperature of acid

Type of acid