2.14. Gases http://www.ck12.org
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Examine this sequence of photos in theFigure2.32, and then answer the questions below.
FIGURE 2.32
- How does a balloon change as a child blows more air into it?
- How does air cause this change in the balloon?
Review
- What is a gas?
- Why does a gas not have a fixed shape or a fixed volume?
- Explain why a gas exerts force
- What does pressure measure?
- Air pressure affects how high a cake rises when it bakes. Directions for cake mixes often have special high
altitude instructions, like those on the label below. Explain why.