Atomic Structure (In class) Review

An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number.

• 20

• 10

• 35

• 25

What is the atomic # of atom B?

Mathematical Equivalence

OFF

Tags

NGSS.MS-PS1-1

What is the mass # of atom B?

Mathematical Equivalence

OFF

Tags

NGSS.MS-PS1-1

Are atom A and atom B the same element?

• Yes, they have the same atomic number

• Yes, they have the same mass number

• No, they have different atomic numbers

• No, they have different mass numbers

Tags

NGSS.MS-PS1-1

Changing the number of neutrons in an atom would change its _________

• atomic number

• mass number

• element name

• element symbol

Every element is different from another element based on the number of

• neutrons

• protons

• electrons

• ions

How can you determine the number of neutrons in an atom if all you know are the mass number and atomic number?

• add mass number + atomic number

• subtract mass number - atomic number

• subtract atomic number - mass number

• multiply atomic number X mass number

What is an atom?

• when the # of protons = to the number of neutrons

• when the # of protons = to the number of electrons

• when the # of neutrons = to the number of electrons

Tags

NGSS.MS-PS1-1

Check box all the correct statements about an atom

• protons and neutrons are inside the nucleus

• protons and neutrons are added together to get the mass number

• protons and electrons are inside the nucleus

• atomic number is the same as the protons in an atom

• atomic number is the same as the electrons in an atom

Tags

NGSS.MS-PS1-1

Move the piece to the appropriate place

e

f

g

d

10

5

Oxygen

6

14

7

Nitrogen

Tags

NGSS.MS-PS1-1