Ch 9 Chemical Bonds and Reactions

Front

What are the signs of a chemical change?

Back

Color change, formation of a precipitate, formation of a gas, odor change, and temperature change.

Tags

NGSS.MS-PS1-2

Front

When are atoms most stable?

Back

Atoms are most stable when their outer shell is complete.

Front

What type of atoms are involved in ionic bonds?

Back

Ionic bonds are formed between metals and nonmetals.

Front

What type of atoms make a covalent bond?

Back

Covalent bonds are formed between two nonmetals.

Front

How are ionic bonds formed?

Back

Ionic bonds are formed by the transfer of electrons.

Front

What is a chemical bond?

Back

A chemical bond is a lasting attraction between atoms that enables the formation of chemical compounds.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons, while covalent bonds involve the sharing of electrons.

Tags

NGSS.HS-PS1-1

Front

What is a precipitate?

Back

A precipitate is a solid that forms and settles out of a liquid mixture during a chemical reaction.

Tags

NGSS.MS-PS1-2

Front

What is the role of electrons in chemical bonding?

Back

Electrons are involved in forming bonds between atoms, either by being transferred (ionic) or shared (covalent).

Tags

NGSS.HS-PS1-1

Front

What is an example of a physical change?

Back

Melting ice is an example of a physical change.

Tags

NGSS.MS-PS1-4