Physical Science Review Chemistry Semester

Front

What happens to energy during an exothermic reaction?

Back

Energy is released to the surroundings.

Front

What type of bond is formed between two nonmetals?

Back

Covalent bond.

Front

What happens to energy during an endothermic reaction?

Back

Energy is absorbed from the surroundings.

Front

What are isotopes?

Back

Isotopes are atoms that have the same number of protons but a different number of neutrons.

Front

What is a particle that moves around the nucleus called?

Back

Electron.

Front

What is the definition of a covalent bond?

Back

A covalent bond is a chemical bond formed when two nonmetals share electrons.

Front

What is an ionic bond?

Back

An ionic bond is a chemical bond formed between a metal and a nonmetal through the transfer of electrons.

Front

What is the role of neutrons in an atom?

Back

Neutrons contribute to the mass of an atom and help stabilize the nucleus.

Front

What is the charge of a proton?

Back

A proton has a positive charge.

Front

What is the charge of an electron?

Back

An electron has a negative charge.