Chemistry Final Review nf

Front

What is the charge of a neutron?

Back

Neutral

Front

What is an element?

Back

A substance made of atoms that are all alike.

Front

Balance the equation: __SnO2 + __H2 → __ Sn + __H2O

Back

1, 2, 1, 2

Front

Balance the equation: __Fe2O3 + __C → __ Fe + __CO2

Back

2, 3, 4, 3

Front

How many moles are in 250.0 g of H2SO4?

Back

2.549 moles

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is the law of conservation of mass?

Back

Mass is neither created nor destroyed in a chemical reaction.

Front

Define a compound.

Back

A substance formed when two or more elements are chemically bonded together.

Front

What is a chemical reaction?

Back

A process that involves the rearrangement of the molecular or ionic structure of a substance.

Front

What is the molar mass of H2O?

Back

18.02 g/mol