exam review

Front

tend to be good conductors of heat and electricity

Back

Metals

Front

as you move from left to right on the periodic table, elements become

Back

Less Metallic

Front

Mendeleev studied elements and looked for

Back

patterns

Front

In the electron cloud model of the atom, what does the cloud represent?

Back

the probability of the electron location

Front

Light is emitted when electrons

Back

move from a higher energy level to a lower energy level.

Front

What describes how the light is produced in flame tests for identifying elements? Options: Protons in the ground state lose energy and give off light. Electrons in the ground state lose energy and move to an excited state, giving off light. Protons in the ground state gain energy and are emitted from the nucleus, giving off light. Electrons in the ground state gain energy, move to an excited state, and give off light when they return to the ground state.

Back

Electrons in the ground state gain energy, move to an excited state, and give off light when they return to the ground state.

Front

Which is the correct name for the compound (NH₄)₂SO₄? Options: nitrogen hydrogen sulfate, ammonium (II) sulfate, nitrogen hydrosulfate, ammonium sulfate

Back

ammonium sulfate

Front

Which is the correct name for the compound HNO₂?

Back

nitrous acid

Front

Which is the correct name for the compound N₂O₄? Options: tetranitrogen dioxide, dinitrogen quadoxide, dinitrogen tetroxide, nitrogen oxide

Back

dinitrogen tetroxide

Front

According to the octet rule most elements need _______ valence electrons.

Back

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