Atomic theory

What are atoms made up of?

• protons

• neutrinos

• electrons

• neutrons

• ions

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What makes up the nucleus of an atom?

• electrons

• neutrinos

• neutrons

• protons

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What do you find around the nucleus in shells?

• protons

• electrons

• neutrons

• positrons

What charge do protons have?

• negative

• neutral

• electric

• positive

What charge do electrons have?

• electric

• protons

• neutral

• negative

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What does the atomic number represent?

• how many electrons an atom has

• how many protons an atom has

• how many neutrons an atom has

• how many electron shell an atom has

What is the atomic number of Al

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what is the atomic number of copper?

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What does the atomic mass number, when rounded, represent?

• the number of neutrons in the nucleus

• the number of protons and neutrons in the nucleus

• the number of isotopes an element has

• the weight of the atom in grams

How many neutrons are in lithium?

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NGSS.MS-PS1-1