Chapter 2 Vocab

Question 1

matter

Answer 1

anything that can take place or be weighed

Question 2

Periodic Table of Elements

Answer 2

organizes all discovered chemical elements in columns and rows

Question 2

the basic unit of a chemical element

Answer 2

Atom

Question 3

Pure substance

Answer 3

Substances that are made up of only one kind of particle

Question 4

A tiny attractive force that joins two atoms together

Answer 4

Bond

Question 5

a Substance that consist of a single type of molecule

Answer 5

Pure Compound

Question 5

Pure Element

Answer 5

a Substance that consist of entirely of one type of atom

Question 6

Molecule

Answer 6

a defined group of two or more atoms that are chemically bonded

Question 7

tend to retain some of the properties of their individual Substances

Answer 7

Mixture

Question 8

Heterogeneous Mixture

Answer 8

the parts of a mixture are noticeable different from one another

Question 9

Substances are so evenly distributed that it is difficult to distinguish one

Answer 9

Homogeneous Mixture

Question 10

Solution

Answer 10

substances dissolve and form a homogeneous mixture

Question 11

heterogeneous mixture that separates into layers over time

Answer 11

Suspension

Question 12

Colloid

Answer 12

contains some particales that are intermediate in size between small particles

Question 13

any characteristics of a material that can be observed

Answer 13

Physical Porperty

Question 14

Viscosity

Answer 14

the tendences of a liquid to resist flowing

Question 14

a materials ability to allow heat to flow through

Answer 14

Conductivity

Question 15

Melting Point

Answer 15

the temp. at which a Substance changes from a solid to a liquid

Question 16

Malleability

Answer 16

allows a solid to be hammered into sheets without shattering

Question 17

to see which of the materials can scratch the other

Answer 17

Hardness

Question 18

the temp. at which Substance changes from a liquid to a gas or vapor

Answer 18

Boiling Point

Question 19

Density

Answer 19

ratio of the mass of a Substance to it’s volume

Question 20

a process that separates the materials based on the size

Answer 20

Filtration

Question 20

Distillation

Answer 20

a process that separates the Substance in a solution

Question 21

Chemical Porperty

Answer 21

any ability to produce a change on the composition of matter

Question 22

occurs when some of the properties of a material change

Answer 22

Physical changes

Question 23

a materials ability to burn in the pressure of oxygen

Answer 23

Flammability

Question 24

Reactivity

Answer 24

discribes how readily a Substance combines chemically with other Substances

Question 25

occurs when a Substance reacts and forms one atom

Answer 25

Chemical change

Question 26

Precipitate

Answer 26

solids form and separate from a liquid mixture