100 questions - year 10

Front

List the three states of matter in increasing order of particle energy.

Back

Solid Liquid Gas

Front

In which two states can diffusion occur?

Back

Liquid and Gas

Front

How could you confirm whether a substance is pure or impure?

Back

Measure its melting or boiling point. Pure substances have fixed, sharp melting/boiling points.

Front

Give the lowest and highest possible values for any Rf value.

Back

0.00 and 1.00

Front

Why do atoms have no overall charge?

Back

They have equal numbers of protons and electrons.

Front

Define the term "isotopes."

Back

Atoms with the same number of protons but with different numbers of neutrons.

Front

Give the period number of the atom with electron configuration 2,8,7.

Back

3

Front

Why are the elements in group 0 (noble gases) generally unreactive?

Back

They have a full shell of outer electrons.

Front

Complete the word equation: Sodium + Water -->

Back

Sodium Hydroxide + Hydrogen

Front

Give another term for a displacement reaction.

Back

A redox reaction