Chem general terms

Question 1

Volume

Answer 1

The amount of 3-dimensional space an object takes up

Question 2

Mass

Answer 2

The measure for the amount of matter

Question 3

Matter

Answer 3

Anything that has mass and takes up space

Question 4

Atom

Answer 4

The smallest unit of of an element

Question 5

Element

Answer 5

A pure substance that cannot be broken down into simpler substances and is made of one atom

Question 5

Compound

Answer 5

A substance that can be broken down into simpler substances, has 2 or more elements

Question 6

Extensive properties

Answer 6

Depends on the amount of matter present. Ex: volume

Question 7

Intensive properties

Answer 7

Do not depend on the amount of matter present. Ex: melting point

Question 8

Physical properties

Answer 8

A characteristics that can be observed or measured with out changing the identity of the substance. Ex: boiling point

Question 9

Chemical properties

Answer 9

Relates to the substance’s ability to undergo changes that that transform it into different substances. Ex: charcoal

Question 10

Physical change/reaction

Answer 10

A change in a substance that does not involve a change in its identity

Question 11

Chemical change/ reaction

Answer 11

A change in which one or more substances are converted into different substances

Question 12

Mixture

Answer 12

A blend of 2 or more kinds of matter. Substances are NOT chemically bonded

Question 13

Homogenous/
solutions

Answer 13

Mixtures that are the same in composition. Ex: salt water

Question 14

heterogeneous

Answer 14

Mixtures that are not uniform throughout. Ex: clay in water

Question 15

Pure substances

Answer 15

Have fixed compositions and will always be homogeneous