3 wins away

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3 wins away!
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Warm Up.

• Identify which of these is not a chemical change.

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What are we doing today?

• Warm Up
• Announcements
• Quiz Review
• Any last test questions.

• Please save any personal grade questions until
  after class.

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• 2. If the relationship between the manipulated
  variable and the responding variable is a direct
  proportion, what will a line graph of this
  relationship look like? A straight line
• 3. Which of the following is NOT a pure
  substance? a.milk colloid b.oxygen element
  c.water compound d.carbon dioxide compound
• 12. In scientific notation, (8.2 104 m) (3.7
  102 m) equals 3.04 x10 7. MAKE SURE YOU READ
  THE QUESTION!

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• 21. How do the properties of a compound compare
  to the properties of the elements it contains?
  The properties of a compound are not the same as
  the properties of the elements. The example of
  H2O is greatPure Hydrogen and Oxygen are highly
  explosive and Fires need oxygen to continue, but
  when they are combined, they put out most fires.
• 22.How is the composition of a substance
  different from the composition of a mixture? A
  substance has a fixed composition. There is a
  true proportion to a substance. The mixture can
  have any combination of materials in it.

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• 26.Analyzing Data What is the slope of the line
  shown in Figure 1-2? Pick two points on the line.
  Do the Rise/Run equation.
• 27.Controlling Variables In Figure 1-2, what is
  the responding variable? The Y value is always
  the responding variable.
• 28.Analyzing Data In Figure 1-2, what is the
  relationship between mass and volume?As the
  volume increases, so does the mass.
• 29.Using Tables and Graphs In Figure 1-2, what
  quantity does the slope represent? The line
  represents Density
• 30.Analyzing Data In Figure 1-2, what metric
  units are represented by values on the plotted
  line? g/cm3

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• 24. Based on the information in Figure 2-1, which
  substances would be solids at 10.0ºC? At 10.0ºC
  the only solids could be gold and acetic acid.
  They both have melting points above 10.0ºC and
  they have boiling points much beyond 10.0ºC

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• 31.Is Mixture C a homogeneous or heterogeneous
  mixture? Explain. Heterogeneous mixture. Look at
  how it seperates into layers and can be separated
  through filtration.
• 32.Which of the mixtures is a solution? Explain
  how you know. Mixture B because we see that it
  scatters light, does not separate and can not be
  separated by filtration.
• 33.Which of the mixtures in Figure 2-2 is a
  colloid? Explain how you know. Mixture C because
  it scatters light and can be separated by
  filtration, which means that the particles are of
  different sizes.
• 34. Rank the mixtures in order of the size of
  their particles, starting with the mixture with
  the smallest particles. BAC
• 35.Predicting Why cant Mixture B be separated by
  filtration? It does not separate into layers What
  method might be used to separate the substances
  in Mixture B? Boiling/Evaporation/Distillation.
  This will split the components.