Isotopes and Atoms

Which shows the correct parts of the nucleus?

• Neutron and Electron

• Neutron and Proton

• Proton and Electron

• Proton, Neutron and Electron

Which part of an atom has the smallest mass?

• Proton

• Neutron

• Electron

• They are all the same

Which part of an atom has a positive charge?

• Proton

• Neutron

• Electron

• None of them

Which part of an atom has a negative charge?

• Proton

• Neutron

• Electron

• None of them

Which part of an atom has no charge?

• Proton

• Neutron

• Electron

• None of them

Using the picture from a periodic table, what is the Atomic Number?

• 26

• Fe

• 55.845

• 56

Tags

NGSS.MS-PS1-1

Using the picture from a periodic table, how many PROTONS are in Iron?

• 26

• 30

• 55.845

• 56

Tags

NGSS.MS-PS1-1

Using the picture from a periodic table, how many NEUTRONS are in Iron?

• 26

• 30

• 55.845

• 56

Tags

NGSS.MS-PS1-1

When two atoms of the same element have different masses, they are called ______, and have a different number of ______.

• Neutrons; Isotopes

• Atoms; Isotopes

• Isotopes; Protons

• Isotopes; Neutrons

Tags

NGSS.MS-PS1-1

Calcium has the atomic number 20. If it has a mass number of 46, how many neutrons are present?

• 46

• 20

• 26

• We cannot tell

Tags

NGSS.MS-PS1-1