Properties And Elements

Question 1

Noble gas

Answer 1

7 elements that make up group 18

Question 2

Chemical property

Answer 2

Ability to change into a new substance

Question 3

Physical property

Answer 3

Characteristics that can be considered bearded or measured without changing to substance

Question 4

Elements in family

Answer 4

Elements that share chemical properties with rachother

Question 5

Chemical reaction

Answer 5

Process of becoming a new substance

Question 6

What substances will have during a reaction

Answer 6

New chemical and physical properties

Question 7

Physical change

Answer 7

Change that affects one or more of the physical properties but the identity stays the same

Question 8

Mixtures

Answer 8

When two or more different substances are physically combined (no chemical connection)

Question 9

Substance

Answer 9

An elements or compound composed of specific parts

Question 10

Element

Answer 10

A pure substance that can not be separated physically or chemically

Question 11

Molecules and compounds

Answer 11

Made of elements In a specific ratio that stays the same

Question 12

Compounds

Answer 12

Made of atoms of different elements bonded together. Can only be separated chemically.

Question 13

Mixtures

Answer 13

Can be separated physically. Molecules of elements and compounds that are not chemically bonded.( held together physically)

Question 14

Alcohol is considered as a

Answer 14

Compound

Question 15

Air is

Answer 15

A mixture

Question 16

H2O is

Answer 16

Compound

Question 17

What number tells us that there is more than one atom and is combined with another atom

Answer 17

Subscript

Question 18

Rust, tarnish and decompose all react with

Answer 18

Oxygen

Question 19

Electrons that make a full outer shell

Answer 19

2( for hydrogen and helium) 8 for other elements

Question 20

Determines wether or not an atom will react with another atom

Answer 20

Valence electrons