chapter 6 science

Question 1

What is matter?

Answer 1

matter is anything has mass and volume

Question 2

Matter Tree

Answer 2

Matter, mixtures, pure substances, mechanical mixtures solutions, elements, compounds.

Question 3

Pure Substance (Element)

Answer 3

Matter that contains 1 type of particle.

• A pure substance that cannot be broken down into simpler substance.

-Examples: Hydrogen / sodium / oxygen / chlorine

Question 4

Pure Substance (Compound)

Answer 4

-A pure substance that contains 2 or more elements in a fixed ratio

-Examples: Salt / Sugar / Water / Carbon dioxide

Question 5

Element

Answer 5

Only 1 type of atom.

Question 6

Compound

Answer 6

Two or more different elements combined chemically in a fixed ratio.

Question 7

Mixtures

Answer 7

Matter that contains 2 or more different types of particles.

Question 8

Solutions (Homogeneous Mixture)

Answer 8

A mixture with only 1 phase (different substances are not visible)
Examples: Salt water / sugar water.

Question 9

Mechanical Mixtures (Heterogeneous Mixture)

Answer 9

A mixture with more than 1 phase (different substances are visible)
Examples: Rock & Water / Sand & Stones.

Question 10

Atom

Answer 10

A particle found in matter.

Question 11

Molecule

Answer 11

Two or more atoms.

Question 12

What is a molecule?

Answer 12

A molecule is a group of atoms that share electrons. This group of atoms can be of the same element or different elements.

Question 13

What is a molecular compound?

Answer 13

A molecular compound is made from 2 or more non-metals sharing electrons. Generally, molecular compounds form between two different non-metals. The attraction between atoms is called a covalent bond.