Chemistry

Question 1

What is a proposed explanation for an observation or scientific problem, which can be tested by further investigation

Answer 1

Hypothesis

Question 2

A measure of the quantity of matter in an object

Answer 2

Mass

Question 3

A characteristic or quality of substance

Answer 3

Property

Question 4

Anything that has mass and volume

Answer 4

Matter

Question 5

The amount of space a sample of matter occupies.

Answer 5

Volume

Question 6

Positively charged atom

Answer 6

Proton

Question 7

A small molecule or particle of a chemical element

Answer 7

Atom

Question 8

The total number of protons and neutrons in a nucleus

Answer 8

Mass Number

Question 9

A unit of mass used to measure atoms

Answer 9

Atomic Mass Units

Question 10

Negatively charged atom

Answer 10

Electron

Question 11

A unit of mass used to measure atoms

Answer 11

Atomic mass units

Question 12

Two of the same atoms with a different number of neutrons in the nucleus

Answer 12

Isotopes

Question 13

Small, dense region consisting of protons and neutrons at the center of an atom

Answer 13

Nucleus

Question 14

Cation

Answer 14

A positively charged ion

Question 15

Anion

Answer 15

A negatively charged ion

Question 16

Located in the center of the periodic table

Answer 16

Transition metals

Question 17

Section D on the periodic table

Answer 17

Transitional Metals

Question 18

Dull, brittle elements that are not good conductors of energy or heat

Answer 18

Non-Metals

Question 19

Group 1

Answer 19

Alkali metals

Question 20

Group 2

Answer 20

Alkaline earth metals

Question 21

Group 17

Answer 21

Halogens

Question 22

Group 18

Answer 22

Noble gases

Question 23

Electrons in the outer-most shell that are available for bonding

Answer 23

Valence Electrons

Question 24

A bond which electrons are not shared evenly

Answer 24

Polar covalent

Question 25

A bond in which electrons are shared evenly

Answer 25

Non-Polar Covalent

Question 26

This states that atoms will give, take, or share electrons in order to get eight electrons in their outer shell

Answer 26

Octet rule

Question 27

The distance from the nucleus to the outer-most electron; gets larger as you go up, and gets smaller as you go left to right

Answer 27

Atomic radius

Question 28

The amount of energy needed to remove an electron from the atom

Answer 28

Ionization energy

Question 29

how many electrons an atom wants

Answer 29

Electron Affinity

Question 30

Electronegativity

Answer 30

How easily an atom can attract electrons

Question 31

Positively or negatively charged atoms in which electrons have been gained or lost, protons never change.

Answer 31

Ion

Question 32

Bonds made between metals; there are always free electrons floating around

Answer 32

Metallic bond

Question 32

Bonds made between metals; there are always free electrons floating around

Answer 32

Metallic bond

Question 32

Bonds made between metals; there are always free electrons floating around

Answer 32

Metallic bond

Question 33

Can't be physically broken down, definite composition

Answer 33

Pure substance

Question 34

Can be physically broken down, no definite composition

Answer 34

Mixture

Question 35

two or more chemically bonded elements

Answer 35

Compounds

Question 36

It has properties of both metals and non-metals

Answer 36

Metalloids

Question 37

Hard, dense elements with a high luster (shiny) can be bent (malleable), pulled and they are good conductors of heat.

Answer 37

Metals

Question 38

Malleable

Answer 38

Can be bent

Question 39

High luster

Answer 39

Shiny

Question 40

Ductile

Answer 40

Can be pulled

Question 41

To Move the decimal point to the left until the first number is at least one but less than ten. The number of places that you have to move it becomes the exponent

Answer 41

Scientific Notation

Question 42

How to do scientific notation?

Answer 42

Move the decimal point to the left until the first number is at least one but less than ten. The number of places that you have to move it becomes the exponent