Chemistry Vocab

Question 1

Single Bond

Answer 1

Straight bond involving 2 atoms and 2 electrons (one from each). All single bonds are straight bonds

Question 2

Double Bond

Answer 2

Involve 2 atoms and 4 electrons. Curved bond

Question 3

Triple Bond

Answer 3

Involve to 2 atoms and 6 electrons. Curved Bond. Only Nitrogen, Carbon, and Boron can form this bond.

Question 4

Coefficient

Answer 4

It’s the number in front of a formula that tells you how many molecules of a formula there are.

Question 5

Subscript

Answer 5

The number of atoms of an element in a formula. It’s a smaller number that goes down and to the right.

Question 6

Noble Gases

Answer 6

Last group in the periodic table, odorless and colorless

Question 7

Halogens

Answer 7

Group 7a on periodic table, highly reactive elements

Question 8

Alkali Earth metals

Answer 8

Group 2a on periodic table, occur in nature, lose 2 valence electrons in bonding.

Question 9

Alkali Metals

Answer 9

A highly reactive element. Ex: Lithium, Sodium, potassium, and rubidium

Question 10

States of Matter

Answer 10

Solid (Something tangible that doesn’t take shape of it’s container), Liquid (Takes shape of it’s container), Gas (intangible and takes shape of its container).

Question 11

Atom

Answer 11

Matter Building blocks. Protons, Neutrons, and electrons.

Question 12

Element

Answer 12

Pure substance, have the same atomic number and protons.

Question 13

Nucleus

Answer 13

The center of an atom, protons and neutrons are inside.

Question 14

Proton

Answer 14

Positively charged particles

Question 15

Electron

Answer 15

Negatively charged particles

Question 16

Neutron

Answer 16

Neutrally charged particles

Question 17

Atomic Number

Answer 17

How many protons an element has and the top number on an element in the periodic table

Question 18

Atomic Mass

Answer 18

Approx. how much one atom of an element weighs, bottom number on the periodic table

Question 19

Atomic Symbol

Answer 19

Symbol of an element, first letter capital second lower case

Question 20

Electron Shell/Cloud

Answer 20

The outside electron ring in an atom

Question 21

Valence Electron

Answer 21

The electrons on the outer most shell of an atom.

Question 22

Dmitri Mendeleev

Answer 22

He ordered the elements on the periodic table by their masses

Question 23

Groups

Answer 23

Columns in a periodic table

Question 24

Periods

Answer 24

Rows in a periodic table

Question 25

Kinetic Theory

Answer 25

Explains how objects change forms of matter

Question 26

Ionic Bond

Answer 26

Oppositely charged ions attracted to each other, Usually between a metal and non metal.

Question 27

Covalent Bond

Answer 27

Sharing of electrons between a non metal and a non metal

Question 28

Element Symbol

Answer 28

Symbol of an element on the periodic table

Question 29

Lewis Dot Structure

Answer 29

Showing how many valence electrons an element has with a dot diagram. 1 dot for each element

Question 30

Bohr Model

Answer 30

Shows the atomic mass, number, etc. like the periodic table

Question 31

Orbital

Answer 31

Each section that the atoms go in