matter; properties, phases, phase changes, and particle nature

Question 1

this occupies space, has mass, and makes up all material.

Answer 1

matter

Question 2

a type of energy, or abstract thing. this does not occupy space, and does not have mass.

Answer 2

non-matter

Question 3

this phase of matter has definite shape & volume. its molecules are tightly packed, and has high density.

Answer 3

solids

Question 4

this phase of matter only has definite volume, and changes shape following the shape of it’s container. its molecules are slightly loose, but has high density

Answer 4

liquids

Question 5

this **phase of matter* has no definite shape and volume, its molecules move freely, and has low density.

Answer 5

gases

Question 6

this phase of matter has no definite shape and volume. its electrically conductive (produces magnetic fields and electric currents), and has very low density

Answer 6

plasmas

Question 7

this describes the characteristics of an object or substance based on it’s appearance & texture.

Answer 7

properties of matter

Question 8

these properties can be observed without changing the composition of matter.

Answer 8

physical properties

Question 9

this type of physical property does not depend on its amount, refers to color, odor, luster, malleability, ductility, conductivity, etc.

Answer 9

intensive properties

Question 10

this type of physical property is affected by its amount, which depends on its physical quantities. refers to weight, volume, mass, and length.

Answer 10

extensive properties

Question 11

this describes the tendency of a substance causing a change in its chemical composition or identity. the characteristics of a substance to react to form new substances.

Answer 11

chemical properties

Question 12

examples of chemical properties include:

Answer 12

combustibility, flammability, and light sensitivity.

Question 13

this is a physical process in which a substance goes from one phase to another. (ex. melting: solid to liquid)

Answer 13

phase change

Question 14

these changes in matter do not involve altering the chemical composition of the substance, refers to **cutting paper, breaking glass, or cutting hair **.

Answer 14

physical changes

Question 15

this change of matter is when a substance changes into a new one and now has a different composition, refers to baking, rotting food, and iron rusting.

Answer 15

chemical changes

Question 16

this is a substance that is composed of only one type of atom. (ex. hydrogen)

Answer 16

elements

Question 17

this is a combination of two or more atoms.

Answer 17

molecules

Question 18

explain the terms monatomic and diatomic molecules.

Answer 18

monatomic molecules are composed of only one atom, while diatomic molecules are composed of only two atoms

Question 19

this contains only one kind of matter, which can either be one single element or one single compound.

Answer 19

pure substance

Question 20

this consists of two or more atoms bound together.

Answer 20

compounds

Question 21

this is comprised of two or more pure substances

Answer 21

mixtures

Question 22

this mixture is uniformly mixed, meaning you can’t tell its components.

Answer 22

homogeneous mixture

Question 23

this mixture is not uniform throughout, meaning you can tell its varying components

Answer 23

heterogeneous mixture