Atomic Structure Study Guide Flash Cards

Question 1

How many amu is a proton?

Answer 1

1 amu

Question 2

How many amu is a neutron?

Answer 2

1 amu

Question 3

What is the charge of a proton?

Answer 3

+1

Question 4

What is the charge of a neutron?

Answer 4

0

Question 5

What is the charge of an electron?

Answer 5

-1

Question 6

Atomic number is the number of ________ an atom has.

Answer 6

protons

Question 7

Mass number is the rounded number of ______ + ______ .

Answer 7

protons + neutrons

Question 8

In a neutral atom, its number of protons equals its number of _____ .

Answer 8

electrons

Question 9

In a neutral atom, its number of electrons equals its number of _____ .

Answer 9

protons

Question 10

Name a complex sub-atomic particle.

Answer 10

Quark

Question 11

True or False: Isotopes have the same physical but different chemical properties.

Answer 11

False! Isotopes have the SAME physical AND chemical properties. The only difference is the atoms mass.

Question 12

True or False: Two isotopes can have a different number of protons.

Answer 12

False! Isotopes of an atom all have the same number of protons.

Question 13

True or False: An atom and its ion have a different number of electrons.

Answer 13

True! When an atom gains or loses an electron, it becomes an ion.

Question 14

Name four ways to identify a chemical reaction has occurred.

Answer 14

1. Change in color
2. Production of a gas
3. Formation of a precipitate
4. Production of heat/light

Question 15

Define wavelength

Answer 15

The distance from the peak of one way to the peak of the next wave.

Question 16

Define frequency

Answer 16

The number of waves that pass through a given area over a set of time.

Question 17

Define what it means when an atom is in its ground state.

Answer 17

All of the atoms electrons are at their lowest energy.

Question 18

Define what it means when an atom is in an excited state.

Answer 18

One (or more) electron absorbs energy and jumps to a higher orbital.

Question 19

Is an atom stable when it’s in its ground state or excited state?

Answer 19

An atom is stable when it’s in its ground state.

Question 20

When an electron loses extra energy it absorbed, giving the energy up as ______ or as _______ that can be seen in the ______ range.

Answer 20

When an electron loses extra energy it absorbed, giving the energy up as __(heat)__ or as __(waves)__ that can be seen in the __(visible light)__ range.

Question 21

True or False: Isotopes are neutral?

Answer 21

True. The number of protons an isotope has must equal the number of electrons.