3.1 CFA composition of an Atom and Isotopes

The nucleus of an atom consists of

• protons and neutrons.

• electrons.

• protons.

• protons, neutrons, and electrons.

Tags

NGSS.MS-PS1-1

What is the smallest particle that still can be considered an element?

• Electron

• Proton

• Atom

• Neutron

The letter Cu is copper’s 

• atomic number

• atomic mass

• element symbol

• element name

What is the atomic mass for copper rounded to the nearest tenth? 

• 29.0

• 34.5

• 63.5

• 92.5

How many protons does a copper atom contain?

• 63.5

• 29

• 34

• 92

Tags

NGSS.MS-PS1-1

Match the followingMatch the correct word with the definition about the atom.

• electron

• Particle of an atom with no charge.

• proton

• Negatively charged particle in the atom.

• neutron

• Postitively charged particle in the atom.

What is the number assigned to the element in the periodic table which is equal to the number of protons?

• isotope

• atomic mass

• atomic number

• mass number

How many neutrons does a copper atom contain if its mass number is 65? 

• 65

• 29

• 36

• 63.5

Tags

NGSS.MS-PS1-1

How many electrons does this atom contain?

• 29

• 63.546

• 35

• 64

Tags

NGSS.MS-PS1-1

What is the mass number of this atom?

• 8

• 16

• 24

• 32

Tags

NGSS.MS-PS1-1