7.1 Compostion Of Matter

Question 1

Substance

Answer 1

Type of matter with a fixed composition that cannot be seperated with physical means

Question 2

Element

Answer 2

Substance made up of atoms with the same identity

Ex: carbon hydrogen aluminum

Question 3

Compound

Answer 3

Atoms of two or more elements combined

Ex: water(h2o), carbon dioxide(co2)

Question 4

Mixture

Answer 4

Matierals made of 2 or more substances that can be seperated by physical means

Question 5

Mixture

Answer 5

When different matierals are easily distinguished

Heterogeneous

Question 6

Substances

Answer 6

Are uniform and spread out

Homogeneous

Question 7

Filtration

Answer 7

Solids can be seperated from liquids by pouring the mixture through a filter

Question 8

Magnetic attraction

Answer 8

Iron objects can be seperated from a mixture using a magnet

Question 9

Evaporation

Answer 9

When left in open air liquid solutions can change to gas leaving solid components behind

Question 10

Distilation

Answer 10

Liquids can be seperated from eachother by heating them up to the temperature at which one of the liquids boils. The liquid boils into a gas than the gas cools forming the liquid