MS-PS1-2 Assessment Teacher Guide Flashcard

Front

What is density?

Back

Density is the mass of an object divided by its volume, often expressed in grams per cubic centimeter (g/cm³) or milligrams per liter (mg/L).

Front

How can you determine if an object has a density less than 1.0 mg/L?

Back

If the object floats in water, its density is less than 1.0 mg/L.

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances, altering the chemical composition of the original substance.

Front

What is solubility?

Back

Solubility is the ability of a solid to dissolve in a liquid, such as water.

Front

What happens to the chemical formula of a substance after a chemical change?

Back

The chemical formula changes; for example, burning wood transforms it into ash.

Front

Which liquid has the greatest density: lamp oil, karo syrup, water, or honey?

Back

Honey has the greatest density among these liquids.

Front

What is an example of a physical change?

Back

Melting ice is an example of a physical change, as the chemical formula remains the same.

Front

What is an example of a chemical change?

Back

Burning wood is an example of a chemical change, as it produces ash and changes the chemical composition.

Front

What is the difference between a physical and chemical change?

Back

A physical change does not alter the chemical composition, while a chemical change does.