5.P.2.2 2019-2020

Front

What is mass?

Back

Mass is the amount of matter in an object, usually measured in grams or kilograms.

Front

Does the mass of an object change when it changes state (e.g., ice to water)?

Back

No, the mass remains the same regardless of the state change.

Front

What happens to the mass of sugar when it dissolves in water?

Back

The mass of the sugar-water mixture remains the same as the mass of the sugar added.

Front

What is the principle of conservation of mass?

Back

The principle states that mass is neither created nor destroyed in a chemical reaction.

Front

What is a closed container in an experiment?

Back

A closed container is a sealed environment where no mass can enter or leave during a reaction.

Front

What is the weight of an object?

Back

Weight is the force exerted by gravity on an object, often measured in newtons or pounds.

Front

If an object weighs 55 grams before boiling, what will it weigh after boiling?

Back

It will still weigh 55 grams after boiling.

Front

What is the effect of burning an object on its mass?

Back

Burning an object in an open environment can lead to mass loss due to gas release, but in a closed container, the mass remains the same.

Front

What is an example of a physical change?

Back

Melting ice is an example of a physical change where the state changes from solid to liquid.

Front

What is an example of a chemical change?

Back

Burning wood is an example of a chemical change where the substance transforms into different materials.