2.3. Solubility Investigation

What is the purpose of planning an investigation?

• To avoid experiments

• To make random guesses

• To consider all the variables

• To ignore variables

What is a control variable?

• A variable that changes

• A variable that is kept constant

• A variable that is measured

• A variable that is manipulated

Which variable is dependent?

• The variable that is changed

• The variable that is measured

• The variable that is ignored

• The variable that is constant

What does the independent variable do?

• It is not important

• It is manipulated by the experimenter

• It is kept the same

• It is affected by other variables

What is meant by 'interval' in an investigation?

• The time taken to complete the experiment

• The number of trials conducted

• The range of values for a variable

• The difference between two measurements

What is the range in an investigation?

• The average of all measurements

• The difference between the highest and lowest values

• The total number of variables

• The number of control variables

Why is it important to discuss accurate and reliable results?

• To avoid doing experiments

• To make the quiz harder

• To understand the quality of data

• To confuse the class

What should you do before carrying out an investigation?

• Ask someone else to do it

• Start the experiment immediately

• Ignore the variables

• Plan the investigation

What is the main focus of this topic?

• Planning a solubility investigation

• Writing a report

• Reading a textbook

• Taking a test

What is a key word related to variables?

• Static

• Unrelated

• Random

• Control