INVESTIGATE MIXTURES

Question 1

A mixture is defined as:

Answer 1

Two or more substances, mixed but not chemically joined

Question 2

A compound is made of _______________ chemically joined together.

Answer 2

two or more elements

Question 3

Identify which of the following substances are mixtures, elements or compounds.

1. Air
2. Pure water
3. Carbon
4. Milk
5. Salt
6. Magnesium

Answer 3

1. Mixture
2. Compound
3. Element
4. Mixture
5. Compound
6. Element

Question 4

A student records the following observation:

‘The two elements reacted together to produce a new white substance.’

Which of the following terms would describe the new substance?

1. Mixture
2. Compound
3. Element

Answer 4

Compound

Question 5

A student records the following observation:

‘The contents of the beaker were easily separated into a clear solution and a yellow solid’.

Which of the following terms would describe the new substance?

1. Mixture
2. Compound
3. Element

Answer 5

Mixture