Chem CP Midterm Review #1

What is the role of an electron in an atom?

• Electrons live inside the nucleus and carry a neutral charge.
• Electrons circle the nucleus and have a positive charge.
• Electrons circle the nucleus and have a negative charge.
• Electrons live inside the nucleus and have a negative charge.

Which two particles make up the nucleus of an atom?

• Protons and Electrons
• Protons and Neutrons
• Molecules and Compounds
• Neutrons and Electrons

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NGSS.MS-PS1-1

Which of the following determines the type of element that an atom makes?

• The size of the nucleus.
• The number of protons.
• How much the atom weighs.
• The number of neutrons.

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NGSS.HS-PS1-1

A proton is a _____ charged particle.

• Negatively
• Positively

An electron is a _____ charged particle.

• Positively
• Negatively

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NGSS.MS-PS2-3

What is an atomic number?

• The sum of protons and neutrons in an atom.
• The sum of protons and electrons in an atom.
• The number of protons in an atom of a specific element.
• The number of neutrons in a specific element.

Where are protons located in the atom?

• orbitals
• nucleus
• rings
• positive

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NGSS.MS-PS1-1

The number of protons plus neutrons.

• Mass number
• Mass Weight
• Atomic number
• Atomic weight

How many neutrons in Carbon-14?

• 6

• 7

• 14

• 8

How many protons does this isotope of titanium have?

• 48
• 22
• 26
• 70

Tags

NGSS.MS-PS1-1