Unit 8 Test- Atoms

Match the subatomic particles with their charge

• Positive

• Proton

• No charge

• Electron

• Negative

• Neutron

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Match the following vocabulary with their definitions

• Covalent Bond

• A chemical bond formed by transferring electrons

• Ion

• An atom or molecule with a net charge due to gaining or losing electrons

• Ionic Bond

• A chemical bond formed by sharing electrons

• Isotopes

• Atoms of the same element with different numbers of neutrons

This first scientific model of the atom, which shows it as a solid indivisible sphere or ball, was proposed by which scientist?

• Dalton

• Thomson

• Rutherford

• Bohr

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Which scientist developed this model of the atom where electrons orbit the nucleus at defined energy levels?

• Dalton

• Thomson

• Rutherford

• Bohr

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Elements in Group 1 of the Periodic Table would have how many valence electrons?

• 0

• 1

• 2

• 11

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Just by looking at the electrons, which group would this atom belong to?

• Group 1

• Group 2

• Group 3

• Group 14

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This category of element is shiny, malleable, and conducts electricity and heat.

• Metals

• Nonmetals

• Metalloids

• HeavyMetals

On the Periodic Table, the metalloids can be found

• Between the metals and nonmetals

• On the left side

• On the right side

• In the two rows at the bottom

Which elements are most likely to have similar properties to eachother?

• Elements within the same Period

• Elements within the same Group

• Elements within the same Periodic Table

Shown in the image is just the nucleus of an atom, what is its atomic mass?

• 6

• 3

• 12

• 9

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