Chapter 3 - Atoms

Question 1

Mass is neither created nor destroyed during ordinary chemical or physical reactions

Answer 1

Law of concentration of mass

Question 2

A chemical compound contains the same elements in exactly the same proportions by mass regardless of the size of the sample or the source of the compound

Answer 2

Law of definite proportions

Question 3

The smallest unit of an element that maintains the properties of that element.

Answer 3

Atom

Question 4

A short range Proton-Neutron, Proton-Proton, Or neutron-Neutron, Force that holds the nuclear particles together.

Answer 4

Nuclear forces

Question 5

If two or more different compounds are composed of the same two elements, Then the ratio of the masses of the second element combined with a certain mass of the first element is always a ratio of small whole numbers.

Answer 5

Law of Multiple proportions

Question 6

Hey unit of mass that is exactly 1/12 the mass of a carbon 12 atom, Or 1.660 540×10 to the -27 power kg.

Answer 6

Atomic mass

Question 7

The number of protons in the nucleus at each atom of an element

Answer 7

Atomic number

Question 8

The weighted average of the atomic masses of the naturally occurring isotopes of an element.

Answer 8

Average atomic mass

Question 9

6.0221367x10 To the 23rd power, The number of particles in exactly one Mole of a pure substance

Answer 9

Avogadro’s number

Question 10

Atoms of the same element that have different masses

Answer 10

Isotopes

Question 11

The total number of protons and neutrons in the nucleus of an isotope.

Answer 11

Mass number

Question 12

The mass of one mole of a pure substance.

Answer 12

Molar mass

Question 13

The amount of a substance that contains as many particles as there are atoms in exactly 12 g of carbon-12

Answer 13

Mole

Question 14

The general term for any isotope of any element, Another term for an atom that is identified by the number of protons and neutrons in it’s nucleus.

Answer 14

Nuclide