Chapter 3.1 Digital Lesson and 3.1 notes

Question 1

How many types of atoms are there

Answer 1

118

Question 2

Where are neutrons located

Answer 2

Center of an atom

Question 3

Define atom

Answer 3

The smallest unit of an element that maintains the properties of that element. Building blocks of matter

Question 4

Define electron

Answer 4

A subatomic particle that has a negative charge

Question 5

Define nucleus

Answer 5

An atoms central region which is made up of protons and neutrons

Question 6

Define atomic number

Answer 6

The number of protons in the nucleus of an atom

Question 7

Electron cloud

Answer 7

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

Question 8

Mass number

Answer 8

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

Question 9

Proton

Answer 9

A subatomic particle that had a positive charge that is located in the atom

Question 10

Neutron

Answer 10

A subatomic particle that has no charge and that is located in the nucleus of an atom

Question 11

What does atom mean in Greek

Answer 11

Undividable or uncuttable

Question 12

What determines somethings atomic number

Answer 12

Number of protons

Question 13

What 2 things does the atomic number tell us

Answer 13

How many protons the atom has, the element of the atom

Question 14

What is an atoms mass number deturmined by

Answer 14

Number of protons and neutrons

Question 15

Isotypes

Answer 15

Atoms with the same number of protons but different number of neutrons

Question 16

Matter is made up of

Answer 16

Atoms

Question 17

Atomic mass

Answer 17

Weighed average madd of all naturally occurring isotopes of the same element

Question 18

Nucleus

Answer 18

Made up of protons and neutrons

Question 19

Amu

Answer 19

SI unit used to express the mass of atomic particles

Question 20

Where are electrons found in an atom

Answer 20

Electron clouds

Question 21

All atoms of the same element contain the same number of

Answer 21

Protons

Question 22

How many protons does an atom with and atomic mass of 23 and a mass number of 51 have

Answer 22

23

Question 23

An atom has no overall electric charge because it has equal numbers of

Answer 23

Electrons and protons

Question 24

Where are protons found

Answer 24

Nucleus

Question 25

What is the mass of neutrons

Answer 25

1 amu

Question 26

What determines the identity of an element

Answer 26

Atomic number

Question 27

Isotopes exist because atoms of the same element can have different numbers of

Answer 27

Neutrons

Question 28

How are isotopes of the same element names

Answer 28

Identified by their mass which is the total number of protons and neutrons

Question 29

What two things have a mass of 1 amu

Answer 29

Protons and neutrons

Question 30

Where are electrons not found

Answer 30

Nucleus

Question 31

The number of what determines the isotope of an element

Answer 31

Neutrons

Question 32

What must be equal in order for an atom to have a neutral charge

Answer 32

Protons and electrons

Question 33

Ion

Answer 33

What we call an atom that is not neutral (positive and negative charges aren’t equal)

Question 34

Mass number

Answer 34

Specific number

Ex: Cu-63

Question 35

When you add or subtract a proton

Answer 35

New element

Question 36

Add another atom

Answer 36

Molecule

Question 37

Add or subtract a neutron

Answer 37

Isotope

Question 38

Add or subtract an electron

Answer 38

Ion