Chemistry semester 1 review

Front

The number of valence electrons ________ as you move across the period.

Back

increases

Front

Which of the following will form a heterogeneous mixture? Options: Kool Aid powder and water, Salt and water, Sugar and water, Oil and water.

Back

Oil and water

Front

Which element has a larger radius? Options: Oxygen (O), Sulfur (S), Tellurium (Te), Polonium (Po).

Back

Polonium (Po)

Front

An atom with 2 protons, 3 neutrons, and 4 electrons has a charge of ____.

Back

-2

Front

What is the name of Fe2(SO4)3?

Back

iron (III) sulfate

Front

What is the definition of a heterogeneous mixture?

Back

A mixture where the components are not uniformly distributed.

Front

What is the definition of valence electrons?

Back

Electrons in the outermost shell of an atom that are involved in chemical bonding.

Front

What trend is observed in atomic radius as you move down a group in the periodic table?

Back

Atomic radius increases.

Front

What is the charge of an electron?

Back

-1

Front

What is the chemical formula for iron (III) sulfate?

Back

Fe2(SO4)3