Diagnostic Test

The scientific method is used by scientists to answer a question and come up with a conclusion

• True

• False

A hypothesis is..

• the goal of the investigation.

• a prediction of the outcome.

• the one thing we're keeping the same

• the one thing we're measuring

There are ... types of variables in an investigation.

• 2

• 4

• 3

• just 1

The first step in the scientific method is to find the .....

• variables

• hypothesis

• conclusion

• aim

To ensure a fair test, there has to be ....... variables.

• controlled

• independent

• dependent

• uncontrolled

"Do plants grow better in water or in soil?" the aim for this scientific investigation is the following:

• To investigate the effect of light on a plant's growth.

• To investigate the effect of water on a plant's growth.

• To investigate the effect of the medium on a plant's growth

• To investigate the effect of soil on a plant's growth.

Which of the following statements is CORRECT?

• Acids taste bitter

• Acids have a pH of 7

• Acids are chemicals that don't react with bases

• Acids are found in some fruits such as oranges and lemons

They taste sour, have a pH below 7 and may be corrosive, these are some properties of...

• bases

• acids

• neutral substances

• water

Bases are chemicals that ....

• taste sour, react with acids and have a pH above 7

• taste bitter, react with acids and have a pH of 7

• taste bitter, react with bases and have a pH below 7

• taste bitter, react with acids and have a pH above 7

When a base is soluble in water, it's said to be.........

• an acid

• a neutral substance

• an alkali

• water