2 I ELEMENTS, COMPOUNDS AND MIXTURES

Question 1

The term meant by Elements?

Answer 1

• Substances that can’t be split into anything simpler by a chemical means
• Contains only one type of atom

Question 2

The term meant by Compounds?

Answer 2

• Formed when two or more elements chemically combine
• Always combine in fixed proportion

Question 3

The term meant by Mixtures?

Answer 3

• Various substances are mixed together and no chemical reaction occurs
• Can be made from elements and/or compounds
• Can be in any proportion

Question 4

Differences between Mixtures and Compounds?

Answer 4

Compounds
- Atoms combined with fixed proportion
- Properties of element in the compounds are different
- Atoms are bonded together and cannot be separated by physical means

Mixtures
- Elements, compounds, mixed in any proportion
- Keep its own properties
- Elements and compounds are not bonded together / can be separated by physical means