Grade 5 Science Unit 1 Properties of Matter Test Review

These flashcards cover key concepts from the Grade 5 Science Unit 1 on Properties of Matter, including definitions, principles, and examples.

What are three properties of a substance you can determine just by looking at it?

Color, shape, and state of matter.

What happens to the particles of potassium chloride when dissolved in water?

The particles will disperse and separate in the water.

What is always true of a compound?

It has more than one kind of atom.

What happens to the molecules of water as you heat it in a pan?

The molecules move faster.

What property do the cylinders measure in liquids?

Volume.

What test can you use to distinguish between flour and baking soda?

React with vinegar to observe if bubbles form.

What could the scientist use to distinguish between sodium bicarbonate and fructose?

Measure the conductivity of a solution of the substance.

What makes a solution conductive?

The presence of ions from soluble substances.

What was the unknown substance if it was soluble in water, white powder, makes bubbles in vinegar, and is conductive?

Sodium bicarbonate.

Why might color not be a useful observation in identifying the substance?

Because multiple substances can be the same color.

What is conductivity?

The ability of a substance to conduct electricity.

What unit of measurement is used for volume?

Milliliters (ml) or liters (L).

Can two samples of matter with different masses be the same type of matter?

Yes, they can be different amounts of the same substance.

What are the three common states of matter we observe?

Solid, liquid, and gas.

If a substance is soluble in water, what does that mean?

It can dissolve and mix completely with the water.

What is a mixture?

When two or more substances are put together but keep their own properties and can usually be separated.

What is the main difference between a mixture and a compound?

In a compound, substances chemically combine to form a new substance, but in a mixture, they just mix without changing.

When a substance makes bubbles in vinegar, what does that usually tell us?

It tells us that a chemical reaction is happening.

What makes a substance good at letting electricity pass through it?

It has tiny particles (ions) that can move around freely in a solution.