Atoms,elements, Compounds And Mixtures

Question 1

Wiat is an atom?

Answer 1

The smallest particle of an element that retains the composition of that element.

Question 2

Define the term Element.

Answer 2

A material that is made up of atoms of only one kind.

Question 3

Define a compound.

Answer 3

A substance that is formed when two or more different element combine together chemically in a fixed ratio. Examples include water and sodium chloride.

Question 4

What is a mixture

Answer 4

A physical combination of two or more different substances(element or compounds). The components of a mixture are not the same, and they can be separated by physicalseparation methods.

Question 5

What is an Elemental molecule

Answer 5

A substance consisting of only one type of element(non-metal) chemically bonded together.

Question 6

Which is an element?

Gold; water; saltwater solution; air or hydrochloric acid.

Answer 6

Gold

Question 7

Is Distilled water a compound or a mixture?

Answer 7

It is a compound

Question 8

Why is sugar a compound and not a mixture?

Answer 8

This is because sugar cannot be separated using physical methods.

Question 9

What are the 6 separation techniques?

Answer 9

Mechanical sorting
Magnet 
Filtration
Evaporation
Frictional distillation
Chromatography

Question 10

What instrument can be used to separate liquids of different densities(do not mix)?

Answer 10

A separating funnel.