Chapter 2

Question 1

Name the 3 main subatomic particles and their charge

Answer 1

Protons (+1), Neutrons (0), Electrons (-1)

Question 2

Which two subatomic particles have the same mass (of 1)

Answer 2

Protons and Neutrons

Question 3

Which subatomic particle(s) is/are found in the nucleus of an atom?

Answer 3

Protons and Neutrons

Question 4

Which subatomic particle(s) reside on the outside of the nucleus of an atom?

Answer 4

Electrons

Question 5

Atomic number

Answer 5

The # of protons in the nucleus of an atom

Question 6

Atoms have no overall charge T/F

Answer 6

T

Question 7

The # of protons = the # of electrons when it comes to the atomic number T/F

Answer 7

T

Question 8

How do you find how many neutrons are in an atom?

Answer 8

The mass (amu) is a sum of neutrons and protons. Subtract the number of protons by the atomic number to get how many neutrons there are

Question 9

What is amu?

Answer 9

Atomic mass unit, the standard measurement of weighting an atom

Question 10

Isotopes

Answer 10

Atoms that have a different charge/mass #. Element itself is the same but the mass (top #) changes.

Question 11

The equation of atomic weight

Answer 11

The sum of [(isotope mass)(fractional natural abundance in decimal)]

Question 12

The bottom left number on subscript of an atomic refers to the

Answer 12

Atomic number (# of protons OR electrons)

Question 13

The top left number on the subscript of an atom refers to

Answer 13

Mass (amu), # of protons and neutrons in the nucleus of an atom

Question 14

Cations are ions where the atoms lost/gained electrons

Answer 14

Lost electrons, now has a positive charge

Question 15

Anions are ions where atoms gain/lost electrons

Answer 15

Gained electron, now has a negative charge

Question 16

Elements on a periodic table are arranged by ______

Answer 16

Atomic number (the number of protons in an element)

Question 17

The rows that go horizontally on a periodic table are called ______

Answer 17

Periods

Question 18

The vertical columns on the periodic table are called ______

Answer 18

groups

Question 19

Groups (the vertical columns) typically contain elements with similar properties near each other/in the same group T/F

Answer 19

T

Question 20

What are the elements in group 1A and are they metallic, non metallic, or metalloids

Answer 20

Alkali metals

Li, Na, K, Rb, Cs, Fr

Question 21

What are the elements in group 2A and are they metals, nonmetals, or metalloids

Answer 21

Alkaline Earth metals

Be, Mg, Ca, Sr, Ba, Ra

Question 22

What are the elements in group 6A and are they metals, nonmetals, or metalloids

Answer 22

Chalcogens, Nonmetals

O, S, Se, Te, Po

Question 23

What are the elements in group 7A and are they metals, nonmetals, or metalloids

Answer 23

Halogens, non metals

F, Cl, Br, I, At, Ts

Question 24

What are the elements in group 8A and are they metals, nonmetals, or metalloids

Answer 24

Noble gasses, non metals

He, Ne, Ar, Kr, Xe, Rn, Og

Question 25

Diatomic molecules

Answer 25

Molecules make up for two of the same atoms

Question 26

What are some examples of naturally occurring diatomic molecules?

Answer 26

H2 (Hydrogen)
N2 (Nitrogen)
O2 (Oxygen)
Br2 (Bromine)

Question 27

C2H4 is a representation of which formula?

Answer 27

Molecular formula

Question 28

Which formula gives the exact number of atoms present in each molecule (ex: H2O)

Answer 28

Molecular Formula

Question 29

Which formula reduces the number of atoms in a molecule to make it appear simpler? (Ex: SO2)

Answer 29

Empirical Formula

Question 30

Which type of ion is typically in metal elements?

Answer 30

Cation

Question 31

Which type of ion is in nonmetals?

Answer 31

Anions