9th Week 12 Reading Homework

A chemical bond is a force of attraction between atoms or ions.

There are __ types of chemical bonds.

In a _____ bond electrons are shared.

A(n) _____ bond is the force of attraction that holds together oppositely charged ions.

A(n) _____is a unique substance that forms when two or more elements combine chemically.

Lemonade is an example of a mixture.

A ______ multiples the number of atoms in a compound.

There are different rules for writing the chemical formulas for ionic and covalent compounds.

the ratio of different elements is represented by coefficients.

An ionic bond forms when atoms of a nonmetallic element give up electrons to atoms of a nonmetallic element.

Energy is _____ when an atom gains valence electrons and forms a negative ion.

It takes a lot of ____ to break ionic bonds.

the force of attraction that holds together two atoms that share a pair of valence electrons

Covalent bonds form only between atoms of nonmetals.

the smallest particle of a covalent compound that still has the properties of the compound