Grade 5_Solids, Liquids and Gases_TEST

What is the term for the three states of matter?

• Solid, liquid, gas, plasma

• Hot, cold, warm, freezing

• Fast, slow, medium, steady

• Hard, soft, transparent, opaque

Answer explanation

The term for the three states of matter is solid, liquid, gas, and plasma, so the correct answer is: Solid, liquid, gas, plasma.

What happens when water from a puddle disappears on a sunny day?

• Evaporation

• Condensation

• Melting

• Solidification

Answer explanation

When water from a puddle disappears on a sunny day, it undergoes evaporation due to the heat from the sun causing the water to turn into vapor.

What is the term for a substance that dissolves in a solvent?

• Gas

• Solid

• Solution

• Solute

Answer explanation

The term for a substance that dissolves in a solvent is called a solute, making 'Solute' the correct choice.

What is the term for a substance in which another substance is dissolved?

• Solute

• Solution

• Solid

• Gas

Answer explanation

The term for a substance in which another substance is dissolved is called a 'solution'.

What is the term for two substances that can be mixed together?

• Miscible

• Magnetic

• Immiscible

• Solvent

Answer explanation

The term for two substances that can be mixed together is 'Miscible'.

What is the term for two substances that cannot be mixed together?

• Miscible

• Magnetic

• Immiscible

• Solvent

Answer explanation

The term for two substances that cannot be mixed together is 'Immiscible'.

What type of change occurs when water turns into ice?

• Biological change

• Chemical change

• Physical change

• No change

Answer explanation

When water turns into ice, it undergoes a physical change, as there is no change in its chemical composition.

What happens when iron is exposed to air and moisture for a long time?

• It starts to grow plants

• It undergoes a chemical change and forms rust

• It remains unchanged

• It turns into gold

Answer explanation

When iron is exposed to air and moisture for a long time, it undergoes a chemical change and forms rust, making it the correct answer choice.

What happens to most substances when they are heated?

• They disappear

• They expand

• They contract

• They stay the same

Answer explanation

When most substances are heated, they expand, so the correct answer is 'They expand'.

What happens to most substances when they are cooled?

• They expand

• They contract

• They stay the same

• They disappear

Answer explanation

When most substances are cooled, they contract, or decrease in volume. This is due to the decrease in kinetic energy of the particles, causing them to move closer together.