Unit Test Review

1
Unit Test Review

• Marking Period 2

2
Unit Test Review

• Write down your answers and check yourself.
• For the first part use the Periodic Table on your
  study guide.

3
Using the Periodic Table

• The elements in the compound shown above are
  found on Planet Z. Delta psi is a common table
  salt used to season food on Planet Z and on
  Earth.

4
Using the Periodic Table

• What is the chemical name of table salt?

5
Using the Periodic Table

• What is the chemical name of table salt?
• Sodium chloride

6
Using the Periodic Table

• What Earth element is ??
• What type of element is ??
• What type of bond holds the compound together?
• How many valance electrons does ? have?

7
Using the Periodic Table

• To which Earth group does ? belong?
• How many protons does ? have?

8
Answers

• What Earth element is ?? Sodium
• What type of element is ?? metal
• What type of bond holds the compound together?
  ionic
• How many valance electrons does ? have? 1
• To which Earth group does ? belong? 17
• How many protons does ? have? 17

9
Properties of Matter

• Which of the following are physical properties of
  metal?
• Conductivity
• Ductility
• Malleability
• Corrosion
• Reactivity with acid

10
Properties of Matter

• What phase of matter, under normal temperatures,
  decreases volume under pressure, increases volume
  with an increase in temperature, and has no
  definite shape?

11
Properties of Matter

• Describe the type of bonding that takes place
  between atoms of metal.

12
Answers

• Which of the following are physical properties of
  metal? Conductivity, Ductility, Malleability
• What phase of matter, under normal temperatures,
  decreases volume under pressure, increases volume
  with an increase in temperature, and has no
  definite shape? gas
• Describe the type of bonding that takes place
  between atoms of metal. Sea of electrons

13
Chemical Reactions

• Balance the chemical equation
• H2O H2 O2
• What type of reaction is this?
• If a total of 16 grams of gas forms, how much
  water reacted?

14
Answers

• Balance the chemical equation
• 2H2O 2H2 O2
• What type of reaction is this? decomposition
• If a total of 16 grams of gas forms, how much
  water reacted? 16 grams

15
Reaction Rates

• What type of reaction results in cooling, like a
  chemical ice pack?
• What biological factor causes a chemical reaction
  to take place as in yeast and peroxide?

16
Answers

• What type of reaction results in cooling, like a
  chemical ice pack? Endothermic
• What biological factor causes a chemical reaction
  to take place as in yeast and peroxide? Enzyme
  catalyst

17
Mixtures

• Why doesnt oil mix with water?
• Why is the volume of salt water less than the of
  the sum of volume of the salt and the volume of
  the water?
• Is this a chemical or physical change? Explain.

18
Answers

• Why doesnt oil mix with water?
• Oil is nonpolar solute and water is a polar
  solvent.

19
Answers

• Why is the volume of salt water less than the of
  the sum of volume of the salt and the volume of
  the water?
• Salt fills in spaces between water molecules.

20
Answers

• Is this a chemical or physical change? Explain.
• No new substance is formed.
• Salt and water are easily separated.
• This is a physical change.

21
Periodic Table of the Elements

• The Elements