Matter 5 th grade quiz practice Items in blue are advanced ideas and will not be required for the quiz but show advanced understanding if included.

What is all matter made of?

Atoms (which combine to form molecules)

Describe all solids at a particle level

particles are close together particles are arranged in a pattern (crystalline) Particles do not conform to space particles are low energy (vibrating slowly)

Describe all liquids on a particle level

particles are somewhat close together particles are not arranged in a pattern (amorphous) Particles conform to fill container from bottom up Particles have more energy than a solid (vibrating more quickly)

Describe all gasses at a particle level

Particles are far apart Particles spread to fill the space Particles are not greatly effected by gravity Particles have much energy (vibrating very fast)

How are atoms held together in molecules?

Bonds (covalent and ionic)

What are the indicators that a chemical change has occurred?

Color change Production of a gas Light emitted Temperature change A new matter is formed Formation of a solid (precipitate)

What is the difference between a physical change and a chemical change?

With a physical change the original materials can be recovered. With a chemical change new matter is formed and you can not easily recover the original ingredients

What does the atomic number on the periodic chart tell you?

The number of protons in the nucleus

How is the periodic chart organized?

Elements that have similar properties are grouped in families vertically on the chart. Elements increase in number by how many protons are in the nucleus Elements are arranged in periods horizontally according to how many energy levels they have

What type of a compound do you get if you combine a metal with a non-metal?

A salt

What are the properties of a salt ?

Dissolves in water Conducts electricity in water Brittle Crystaline High melting temperature

What are the properties of metals ?

Electrical conductivity Thermal conductivity Malleable or ductile (bendable or smashable) Some are magnetic Shiny (luster) High melting temperature (except mercury)

What element is common to all organic (living) matter?

Carbon

What is the most abundant element in the human body?

oxygen

What is the most abundant compound in the human body?

H20 (water)

Which of the following are pure elements? O, CO2, H20, Cl, NaCl

O and Cl

Which of the following are compounds? O, CO2, H20, Cl, NaCl

CO2, H20,and NaCl

What is a solution?

A special kind of mixture in which a solid is dissolved in a liquid.

How can you tell if a solution is saturated?

You can not dissolve any more solid into the liquid so some stays on the bottom