MS-PS1-1

The atomic mass equals the number of...

• protons plus the number of electrons

• protons plus the number of neutrons

• protons

• neutrons

Which statement best describes an electron?

• Smaller mass than a proton and a negative charge
• Smaller mass than a proton and a positive charge
• Greater mass than a proton and a negative charge
• Greater mass than a proton and a positive charge

What particle is Z?

• Proton

• Neutron

• Nucleus

• Electron

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NGSS.MS-PS1-1

What particle is Y?

• Proton

• Neutron

• Nucleus

• Electron

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NGSS.MS-PS1-1

What particle is X?

• Proton

• Neutron

• Nucleus

• Electron

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NGSS.MS-PS1-1

The "1" represents the...

• Atomic Number

• The number of protons the atom has

• Atomic Mass

• How old the element is

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NGSS.MS-PS1-1

What is the basic unit of matter? (Hint: What is all matter made up of?) Cells Light Atoms Nucleus

• Cells

• Light

• Atoms

• Nucleus

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NGSS.MS-PS1-1

Which of the following is NOT part of an atom?

• Electron

• Element

• Proton

• Neutron

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NGSS.MS-PS1-1

Which of the following statements is NOT true about atoms?

• Electrons are negatively charged and are found in the electron cloud outside of the nucleus.

• Protons and neutrons are found in the nucleus.

• Protons have no charge.

• Neutrons are neutral in charge and are the same mass as protons.

• The number of protons is equal to the number of electrons in a neutral atom.

Select the statement that is NOT true.

• An element is a substance that is made entirely from one type of atom.

• For example, the element hydrogen is made from atoms containing a single proton and a single electron.

• If you change the number of neutrons an atom has, you change the type of element it is.

• All the above are true.