Ch10

Question 0

Electron

Answer 0

A subatomic particle that has a negative charge

Question 1

Atom

Answer 1

The smallest unit of an element that maintains the chemical propertied of the element

Question 2

Nucleus

Answer 2

In physical science, an atom’s central region which is made out of protons and neutrons

Question 3

Electron cloud

Answer 3

A region around the nucleus where electrons are likely to be found

Question 4

Proton

Answer 4

A subatomic particle that had a charge and is found in the nucleus of an atom

Question 5

Atomic mass unit

Answer 5

A unit of mass that describes the mass of an atom or molecule

Question 6

Atomic number

Answer 6

The number of protons in the nucleus of an atom; the atomic number is the same for all atoms of an element

Question 7

Isotope

Answer 7

An atom that has the same number of protons (or the same atomic number) as other atoms of an element do but that has a different number of nuetrons and thus giving it a different atomic mass

Question 8

Mass number

Answer 8

The sum of the numbers of protons and neutrons in the nucleus of an atom

Question 9

Atomic mass

Answer 9

The mass of an atom expressed in atomic mass units

Question 10

Atomic mass units

Answer 10

The unit of the mass of an atom