AECM 2

Question 1

An atom without an overall charge is called a

Answer 1

Neutral atom

Question 2

A _ atom will have the same amount of protons and electrons

Answer 2

Neutral atom

Question 3

(Neutral Atom) has no overall charge because

Answer 3

Electrons (-) same number as protons (+)

Question 4

A positive atom will have more _ than _

Answer 4

Protons

Electrons

Question 5

A negative atom will have more _ than _

Answer 5

Electrons

Protons

Question 6

Atoms are usually classified as

Answer 6

Elements

Question 7

Elements (atoms) also known as

Answer 7

Pure substances

Question 8

There are hundreds of

Answer 8

Atoms

Question 9

A _ is made up of only one type of atom or one type of molecule

Answer 9

Pure substance

Question 10

A pure substance is made up of only one type of atom or one type of

Answer 10

Molecule

Question 11

A pure substance can be either an _ or a _

Answer 11

Element

Compound

Question 12

Oxygen and hydrogen are an example of

Answer 12

Pure substances

Question 13

An example of a pure substance is

Answer 13

Sodium

Question 14

A molecule is _ joining together chemically

Answer 14

Two or more atoms

Question 15

A compound is a molecule that contains at least two different elements (or atoms) that are

Answer 15

Chemically combined in a fixed ratio

Question 16

H2O is a compound because

Answer 16

Contains two different elements

Question 17

Table salt a compound because

Answer 17

Contains two different elements

Question 18

Two elements in table salt (2)

Answer 18

Sodium (Na)

Chloride (Cl)

Question 19

Table salt’s chemical symbol

Answer 19

NaCl

Question 20

A chemical substance is something that can’t be

Answer 20

Separated into its components by physical methods

Question 21

Chemical substance example

Answer 21

Diamond is made of same substance as coal (carbon)

Question 22

A compound is reacted chemically, meaning each of its individual parts,

Answer 22

No longer retain their own properties

Question 23

Example of compound parts no longer retaining their own properties

Answer 23

When sodium and chloride become salt, they no longer have their harmful properties

Question 24

Sodium (Na) is a

Answer 24

Highly reactive silverish metal

Question 25

Chloride is a _ at room temp

Answer 25

Toxic yellow-green gas

Question 26

Combinations of the parts of a compound are always fixed example

Answer 26

H2O always two hydrogen, one oxygen