Chemistry(Discovering Atomos)

Question 1

Define Chemistry

Answer 1

The study of the composition, structure, and properties of substances, and the changes they undergo.

Question 2

Define Matter

Answer 2

Anything that has mass and takes up space.

Question 3

Solid

Answer 3

Matter with a definite shape and volume

Question 4

Liquid

Answer 4

Matter with no definite shape, but definite volume.

Question 5

Gas

Answer 5

Matter without shape or volume.

Question 6

Plasma

Answer 6

Matter that is broken down into charged particles

Question 7

Atom

Answer 7

The smallest unit of a substance that still has all the properties of the substance.

Question 8

Element

Answer 8

A substance made from only one kind of atom.

Question 9

Compound

Answer 9

A substance made up of more than one element.

Question 10

Mixture

Answer 10

A substance whose components are not bound together.

Question 11

Proton

Answer 11

Particles with a positive charge.

Question 12

Electron

Answer 12

Particle with a negative charge.

Question 13

Neutron

Answer 13

A particle with no charge

Question 14

Quarks and Leptons

Answer 14

The building blocks of protons, neutrons, and electrons.

Question 15

Ion

Answer 15

An atom that is not electrically balanced.

Question 16

Cation

Answer 16

A positively charged ion.

Question 17

Anion

Answer 17

A negatively charged ion.

Question 18

Atomic mass

Answer 18

The size of an atom.

Question 19

Atomic Mass Unit

Answer 19

The units used to measure atomic mass.

Question 20

Periodic Table of the Elements

Answer 20

A chart of the elements, organized into periods and groups.

Question 21

Atomic Number

Answer 21

The number of protons in an element.

Question 22

Period

Answer 22

One of seven horizontal rows of the periodic table

Question 23

Group

Answer 23

The vertical columbs of the periodic table

Question 24

Metal

Answer 24

An element that can conduct electricity well, that can be molded or stretched without braking

Question 25

Metalloid

Answer 25

Elements that are more brittle than metals, and do not conduct electicity as well.

Question 26

Nonmetal

Answer 26

Elements that are brittle, and do not conduct electricity well.

Question 27

Symbol

Answer 27

The letter or pair of letters that represent an element

Question 28

Isotope

Answer 28

A variation of an element that has an extra or is missing a neutron

Question 29

Electron Configuration

Answer 29

The organization of electrons around the nucleus of an atom

Question 30

Orbit

Answer 30

A representation of the energy level of an electron.

Question 31

Energy Level

Answer 31

The amount of energy in an electron, measured in calories.

Question 32

Electron Cloud

Answer 32

The region around an atom where electrons are predicted to be found at any given point

Question 33

Valence Electrons

Answer 33

The electrons in the outermost orbit.

Question 34

Molecule

Answer 34

A group of two or more elements linked together by a chemical bond.

Question 35

Covalent Bond

Answer 35

A bond created by sharing electrons

Question 36

Ionic Bond

Answer 36

A bond created by donating electrons

Question 37

Homonuclear Diatomic Molecule

Answer 37

A molecule made of just one kind of atom.

Question 38

Molecular Mass

Answer 38

The combined masses of the atoms in a molecule

Question 39

Subscript

Answer 39

The number to the lower right of an element’s symbol, denoting the number of atoms of that element

Question 40

Mole

Answer 40

A group of atoms or molecules that total 6.022x10^(23)

Question 41

Lewis Structures

Answer 41

Electron dot diagrams used to illustrate valence electrons