Conservation of matter

Front

What does the conservation of matter state?

Back

Matter cannot be created or destroyed in an isolated system.

Front

If a sealed air bag is weighed before and after inflation, what will happen to its weight?

Back

The weight will stay the same.

Front

What is the total weight of a solution if 25 grams of sugar dissolves in 150 grams of water?

Back

175 grams.

Front

When ice melts, what remains the same?

Back

The mass.

Front

If 250 grams of iron and sand are separated and the mass of the sand is 150 grams, what is the mass of the iron?

Back

100 grams.

Front

What two properties must matter have?

Back

Matter must have weight and take up space.

Front

What is the definition of mass?

Back

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

Front

How does the mass of a substance change when it undergoes a physical change, such as melting or dissolving?

Back

The mass remains the same during physical changes.

Front

What is an example of a physical change?

Back

Melting ice or dissolving sugar in water.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.