F2024 Final Chemistry Review

Front

What is a mole in chemistry?

Back

A mole is a counting unit in chemistry that is equal to 6.02 x 10^23 particles, known as Avogadro's number.

Front

How many moles of water are produced from 2 moles of hydrogen and 1 mole of oxygen?

Back

2 moles of water are produced.

Tags

NGSS.MS-PS1-5

Front

What are reactants in a chemical equation?

Back

Reactants are the starting substances that undergo a chemical change in a reaction.

Tags

NGSS.HS-PS1-7

Front

How do you balance a chemical equation?

Back

You adjust the coefficients of the reactants and products to ensure the same number of each type of atom on both sides of the equation.

Tags

NGSS.HS-PS1-7

Front

What is a covalent bond?

Back

A covalent bond is a type of chemical bond where two atoms share electrons.

Tags

NGSS.HS-PS1-1

Front

What is Avogadro's number?

Back

Avogadro's number is 6.02 x 10^23, which is the number of particles in one mole of a substance.

Tags

NGSS.HS-PS1-7

Front

What is the significance of the atomic mass in relation to moles?

Back

The atomic mass of an element in grams is numerically equal to the mass of one mole of that element.

Front

What is the balanced equation for the decomposition of potassium nitrate (KNO3)?

Back

2 KNO3 → 2 KNO2 + O2.

Front

What happens to electrons in a covalent bond?

Back

In a covalent bond, the bonded atoms share electrons.

Front

What is the formula for calculating moles from mass?

Back

Moles = mass (g) / molar mass (g/mol).