Chemistry Chapter 3, 4 and 5 Review

Front

What type of bonding is present in water (H2O)?

Back

Molecular covalent bonding.

Front

What does the rule of zero charge state?

Back

The charges on metal cations and nonmetal anions in an ionic compound add up to zero.

Front

How many protons are in a phosphorus atom?

Back

15 protons.

Front

What is the density of tin compared to aluminum?

Back

The density of a tin can coated with aluminum is between 2.8 g/cm³ and 7.3 g/cm³.

Front

How can nitrogen and oxygen atoms have the same mass?

Back

They have different numbers of protons and neutrons.

Front

Define ionic bonding.

Back

Ionic bonding is the electrostatic attraction between oppositely charged ions.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

Explain the concept of isotopes.

Back

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

Front

What is the formula for calculating density?

Back

Density = Mass/Volume.

Front

What is a covalent bond?

Back

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