Atom Review

What are the basic building blocks of all matter?

• Elements

• Isotopes

• Atoms

• Cells

Which of these determines the identity of an atom?

• proton

• neutron

• valence electron

• protons and neutrons

Which of these is found in the cloud surrounding nucleus?

• proton

• neutron

• electron

• protons and neutrons

Which of these IS found in the nucleus?

• proton

• neutron

• electron

• protons and neutrons

Which of these has a positive charge?

• proton

• neutron

• electron

• protons and neutrons

Which of these has a negative charge?

• proton

• neutron

• electron

• protons and neutrons

Which of these has a neutral charge?

• proton

• neutron

• electron

• protons and neutrons

Which of these has the least mass at almost 0 amu?

• proton

• neutron

• electron

• protons and neutrons

Which of these best describes an electron?

• It has no charge and about the same mass as a proton.

• It has a negative charge and much less mass than a proton.

• It has a positive charge and much more mass than a neutron.

• It has a negative charge and about the same mass as a neutron.

A certain atom has 26 protons, 26 electrons, and 30 neutrons. Its mass number is ____.

• 26
• 30
• 52
• 56