1.2 - Elements and Atoms: The building Blocks of Matter

Question 1

Atom

Answer 1

The smallest unit of an element that retains the unique properties of that element

Question 2

Atomic mass

Answer 2

The average mass number of all atoms of a given element

Question 3

Atomic Number

Answer 3

The number of protons in the nucleus of an atom

Question 4

Chemical Symbol

Answer 4

The one or two letter abbreviation used to represent an element

Question 5

Electron

Answer 5

Negatively charged subatomic particles that are located in the electron cloud of an atom

Question 6

Electron Cloud

Answer 6

The area outside of the nucleus where electrons are located

Question 7

Element

Answer 7

A pure substance that cannot be created or broken down by ordinary chemical means

Question 8

Mass

Answer 8

The amount of matter contained in an object

Question 9

Mass Number

Answer 9

A whole number representing the number of protons and neutrons in the nucleus of an atom

Question 10

Matter

Answer 10

Anything that occupies space and has mass

Question 11

Neutron

Answer 11

Neutral (non-charged) subatomic particles that have mass and are located in the nucleus of an atom

Question 12

Nucleus (atom)

Answer 12

The center of an atom where protons and neutrons are located

Question 13

Periodic Table of Elements

Answer 13

A reference table of all known elements arranged by atomic number

Question 14

Proton

Answer 14

Positively charged subatomic particles that have mass and are located in the nucleus of an atom

Question 15

Subatomic Particle

Answer 15

The particles (protons, neutrons, electrons) that make up the parts of an atom

Question 16

Weight

Answer 16

A substance’s mass as affected by the pull of gravity