Understanding Chemistry

H₂O and CO_{2 are examples of a chemical}

• property.

• change.

• bond.

• formula.

How do liquid water, ice and water vapor differ from each other?

• different states

• different compounds

• different molecules

• different elements

Table salt and water are examples of

• atoms

• elements

• mixtures

• substances

The measure of mass per unit of volume is

• weight

• melting point

• boiling point

• density

All elements are made of basic particles called

• compounds

• mixtures

• atoms

• molecules

In the lab, liquid volume is measured with a

• electrode

• scale

• triple beam balance

• graduated cylinder

How would you calculate the density of an object?

• weight divided by volume

• mass divided by volume

• volume times mass

• weight times mass

If a gas catches fire easily that is a

• state of matter

• physical property

• chemical property

• chemical formula

The surface of water can act like a skin because of a property called

• viscosity

• surface tension

• condensation

• evaporation

Which state of matter can change volume easily

• solid

• liquid

• gas

• Frozen