Chemistry Fall Semester Exam Review 2024

Front

What is the most reactive group of nonmetals on the periodic table?

Back

Halogens, Group 17, which have a valence electron pattern of s²p⁵.

Front

Which state of matter can be compressed into a significantly smaller volume?

Back

Gas only.

Front

What do the dots in an electron dot diagram represent?

Back

The outermost electrons involved in bonding.

Front

What distinguishes isotopes of an element?

Back

Isotopes have the same number of protons but different numbers of neutrons.

Front

How do you convert 250 cm to meters?

Back

0.250 m.

Front

What is the definition of an isotope?

Back

Atoms of the same element that have the same number of protons but different numbers of neutrons.

Front

What is the significance of valence electrons in chemical bonding?

Back

Valence electrons are involved in forming bonds between atoms.

Front

What is the periodic trend for reactivity in metals?

Back

Reactivity increases as you move down a group in the periodic table.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

Front

What is the formula for calculating density?

Back

Density = Mass/Volume.