Chem final review

Front

What is the term for the number of protons plus neutrons in an atom?

Back

Atomic mass

Front

What tools would you use to measure length?

Back

Ruler, tape measure, calipers

Front

How many significant figures are in the number 4004?

Back

4

Front

How many significant figures are in the number 9009.00?

Back

6

Front

Is the following equation balanced or unbalanced? N2 + 3 H2 --> 2NH3

Back

Balanced

Front

What is the definition of atomic number?

Back

The number of protons in the nucleus of an atom.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.

Front

What is a chemical equation?

Back

A representation of a chemical reaction using symbols and formulas.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed.

Front

What is an isotope?

Back

Atoms of the same element with different numbers of neutrons.