Chemistry Final Review

Front

What is the trend of reactivity in the periodic table?

Back

Elements on opposite sides of the Periodic Table are most likely to react.

Front

Ionic bonds form between metals and what type of elements?

Back

Nonmetals.

Front

What type of reaction is represented by the equation H2 + 2O2 → 2H2O?

Back

Synthesis.

Front

How does atomic radius change down a group in the periodic table?

Back

Atomic radii generally increase.

Front

What element has five valence electrons?

Back

Phosphorus.

Front

What is the definition of an ionic bond?

Back

An ionic bond is a chemical bond formed between two ions with opposite charges.

Front

What is the general trend of electronegativity across a period?

Back

Electronegativity generally increases across a period.

Front

What is the definition of a covalent bond?

Back

A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms.

Front

What is the significance of the octet rule in chemistry?

Back

The octet rule states that atoms tend to gain, lose, or share electrons to achieve a full set of eight valence electrons.

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.