Atoms and Bonding Review

Protons are located in the nucleus of the atom. A proton has

• No charge
• A negative charge
• A positive and negative charge
• A positive charge

The electrons on the outermost energy level of an atom are called valence electrons.

• True
• False

Neutrons are in the nucleus of the atom. A neutron has

• A positive charge
• No charge
• A negative charge
• twice as much positive charge as a proton

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In the process of ionic bonding, ions come together because

• Opposite charges repel
• Positive and negative ions attract
• Salt is magnetic
• Like charges attract each other

Tags

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If an atom gains an electron, then the atom will become _____________________.

• a positive ion.

• a negative ion.

• a neutral atom.

• an isotope.

If an atom is neutral, it has an equal number of ________________________ and ______________________________.

• electrons and neutrons.

• protons and neutrons.

• protons and electrons.

• protons, neutrons, and electrons.

In the following process, Na --> Na+ what has taken place?

• loss of a proton

• gain of a proton

• loss of an electron

• gain of an electron

Tags

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NGSS.HS-PS1-2

How many atoms are in the chemical formula FeC₅O₅?

• 5

• 11

• 15

• 26

Tags

NGSS.MS-PS1-1

The number of ________________ in the atom of an element determines its chemical properties.

• Protons

• Neutrons

• Valence Electrons

• Atomic Number

How can you find the number of protons an atom of an element has?

• Looking at its atomic mass.

• Looking at its charge.

• Looking at its atomic number.

• Looking at the number of neutrons.