Atoms, elements, compounds and mixtures

Question 1

What is an atom?

Answer 1

Atom is the smallest particle of an element that HAVE the chemical properties of that element. It is the building block of an element.

Question 2

What is an element?

Answer 2

Elements are made of atoms. The atoms in a particular element are the same as each other, and they are different from the atoms of all other elements. It cannot be broken into smaller elements.

Question 3

Is water (H2O) a compound or single element?

Answer 3

Compound

Question 4

Each element has it’s own symbol. Which symbol is correct for Copper?

1. CU
2. cU
3. Cu
4. cu

Answer 4

3. Cu

first letter is always a capital and the second lower case

Question 5

What is a mixture?

Answer 5

Mixtures are formed when two or more substances are added together but not chemically combined.

Question 6

Can the substances in a mixture be separated?

Answer 6

Yes

Question 7

What are some ways you can separate mixtures?

Answer 7

Evaporation, filtration, distillation and chromatography