Phases Of Matter Flashcards

Question

What is an electrical insulator

Answer 1

A material that prevents the flow of electrical charge through it

Answer 2

A material that allows heat to pass through easily

Answer 3

The high temperature at which a liquids vapour pressure is equal to atmospheric pressure

Answer 4

A material allowing light to pass through so that object behind can be directly seen

Answer 5

A substance that is hard but likely to break or crack easily

Answer 6

High Mass per unit volume

Answer 7

The ability of a material to be hammered or pressed into shape

Answer 8

The high temperature at which a solid changes it’s phase to becomes a liquid

Answer 9

The ability of a material to deform elastically and return to its original shape when then applied stress is removed

Answer 10

The ability of a material to set on fire

Answer 11

The ability of a material to be stretched out Into thin wire

Answer 12

- Substances in a mixture can be mixed in an relationship. For example if you have a mixture of salt and water. No matter how much salt you add to the water, it will still be called a mixture of salt and water. - The substances in a mixture keep their separate properties. For example in a mixture of salt and water both the salt and water keep the same properties that they had when the salt was outside the water. - Substances in a mixture can be separated through mechanical separating methods. For example you can separate a salt and water mixture using distillation

Answer 13

- Distillation (based on the boiling point of a liquid usually used for homogeneous mixtures ) - hand separation (big visible particles) - magnet (to separate a magnet from a non-magnetic material) -filtration (for when there is bigger particles and smaller particles) Etc

Answer 14

Using melting and boiling points, chromatography

Answer 15

Anything that occupies space and has mass

Answer 16

Substances composed out of matter

Answer 17

The properties we can detect when va material is studied on its own

Answer 18

An impure substance made up of two or more pure substances where the substances are not joined or bonded together and no chemical reaction occurs between them

Answer 19

Homogeneous and heterogeneous

Answer 20

- they can be mixed in any proportion, eg a salt water solution will be called a slay water solution no matter how much salt or water there is - the substances in a mixture keep their separate properties eg in a saltwater solution the salt keeps the same properties it had when it was outside the water - substances in a mixture can be separated through mechanical separation methods such as evaporation

Answer 21

The substances are in one phase in a homogeneous mixture whereas they aren’t in a heterogeneous mixture

Answer 22

- by measuring the melting and boiling points of substances. Pure substances have a fixed melting and boiling point, impurities lower the melting point and increases the boiling point. - by chromatography.

Answer 23

The process whereby substances are divided into their various components. There is paper, liquid, column and gas chromatography

Answer 24

1. Place pencil over a beaker with ethanol or water 2. Place a strip of chromatography paper with the solution below the dot 3. The solution is siphoned by the paper and moves upwards 4. Different colourants have different solubilities and thus will travel different distances up the paper (more soluble more distance) 5. If different colour patches observed then impure substance. Else one patch then pure substance