Science 9 Unit 2 Review. Write the difference between: heterogeneous mixture and a homogeneous...

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Science 9 Unit 2 Review

Transcript of Science 9 Unit 2 Review. Write the difference between: heterogeneous mixture and a homogeneous...

Page 1: Science 9 Unit 2 Review. Write the difference between: heterogeneous mixture and a homogeneous mixture a physical change and a chemical change an element.

Science 9

Unit 2 Review

Page 2: Science 9 Unit 2 Review. Write the difference between: heterogeneous mixture and a homogeneous mixture a physical change and a chemical change an element.

Write the difference between:

• heterogeneous mixture and a homogeneous mixture

• a physical change and a chemical change

• an element and a compound

Page 3: Science 9 Unit 2 Review. Write the difference between: heterogeneous mixture and a homogeneous mixture a physical change and a chemical change an element.

Fill in the blanks

• If a substance has the ability to burn in oxygen, it has the property of ________.

• A homogeneous mixture can also be called a ______________.

• A heterogeneous mixture can also be called a _________________

• A substance that cannot be broken down into simpler substances is an _________.

• The physical property of matter know as mass per unit volume is called __________

Page 4: Science 9 Unit 2 Review. Write the difference between: heterogeneous mixture and a homogeneous mixture a physical change and a chemical change an element.

WHMIS

• What does the acronym WHMIS stand for?

• Why was the WHMIS system developed?

Page 5: Science 9 Unit 2 Review. Write the difference between: heterogeneous mixture and a homogeneous mixture a physical change and a chemical change an element.

Chemical Changes

• List three examples of chemical changes

• List three examples of physical changes.

Page 6: Science 9 Unit 2 Review. Write the difference between: heterogeneous mixture and a homogeneous mixture a physical change and a chemical change an element.

Laws

• What is the law of conservation of mass?

• What is the law of definite composition?

Page 7: Science 9 Unit 2 Review. Write the difference between: heterogeneous mixture and a homogeneous mixture a physical change and a chemical change an element.

Define the following

• atom

• proton

• neutron

• electron

• valence electron

• nucleus (atom)s

Page 8: Science 9 Unit 2 Review. Write the difference between: heterogeneous mixture and a homogeneous mixture a physical change and a chemical change an element.

Draw and Label the Model of a Sodium Atom

Page 9: Science 9 Unit 2 Review. Write the difference between: heterogeneous mixture and a homogeneous mixture a physical change and a chemical change an element.

Corrosive Chemicals

• Name three examples of highly corrosive chemicals.

• Name three highly reactive metals.

Page 10: Science 9 Unit 2 Review. Write the difference between: heterogeneous mixture and a homogeneous mixture a physical change and a chemical change an element.

Periodic Table

• State the element symbol, atomic number, and atomic mass of the following:

• lithium

• beryllium

• phosphorous

• sulfur

Page 11: Science 9 Unit 2 Review. Write the difference between: heterogeneous mixture and a homogeneous mixture a physical change and a chemical change an element.

Fill in the blanks

• The _________ table is a collection of elements.

• Vertical columns in this table are called __________.

• Horizontal rows in the table are called __________.

Page 12: Science 9 Unit 2 Review. Write the difference between: heterogeneous mixture and a homogeneous mixture a physical change and a chemical change an element.

Periodic Table

• Which groups are divided by the “staircase” on the periodic table?

Page 13: Science 9 Unit 2 Review. Write the difference between: heterogeneous mixture and a homogeneous mixture a physical change and a chemical change an element.

Periodic Table

• Identify the following elements as metals, non-metals, or metalloids.

• carbon (C)

• oxygen (O)

• iron (Fe)s

• silicon (Si)

• potassium (K)

• bromine (Br)

• boron (B)

• nitrogen (N)

Page 14: Science 9 Unit 2 Review. Write the difference between: heterogeneous mixture and a homogeneous mixture a physical change and a chemical change an element.

Ionic and Molecular Compounds

• State whether each compound is ionic or molecular:

• hydrogen peroxide• carbon tetrachloride• aluminum oxide• nitrogen dioxide• lithium chloride• sodium fluoride

Page 15: Science 9 Unit 2 Review. Write the difference between: heterogeneous mixture and a homogeneous mixture a physical change and a chemical change an element.

Chemical formula

• Use your textbook to write the chemical formula for the following molecular compounds:

• sulfur dioxide• carbon monoxide• carbon tetrachloride• propane gas• methane gas• carbon dioxide

Page 16: Science 9 Unit 2 Review. Write the difference between: heterogeneous mixture and a homogeneous mixture a physical change and a chemical change an element.

Chemical Formula

• Name the following ionic compounds:

• NaCl

• KI

• AgBr

• MgO

• LiCl

• NaF

Page 17: Science 9 Unit 2 Review. Write the difference between: heterogeneous mixture and a homogeneous mixture a physical change and a chemical change an element.

Chemical Reactions

• List six observations that would lead you to believe that a chemical reaction occurred.

Page 18: Science 9 Unit 2 Review. Write the difference between: heterogeneous mixture and a homogeneous mixture a physical change and a chemical change an element.

Chemical equations

• Write the chemical equation for the formation of silver bromide (p. 148)

• Write the chemical equation for the combustion of methane gas (p. 149)

Page 19: Science 9 Unit 2 Review. Write the difference between: heterogeneous mixture and a homogeneous mixture a physical change and a chemical change an element.

Chemical Equations

• Write a balanced chemical equation for the following reactions (pp. 148-149):

• hydrogen gas + oxygen gas -> water

• magnesium solid + oxygen gas -> magnesium oxide solid

Page 20: Science 9 Unit 2 Review. Write the difference between: heterogeneous mixture and a homogeneous mixture a physical change and a chemical change an element.

Chemical Equations

• Write a balanced chemical equation for the following reactions (p. 149)

• methane gas + oxygen gas -> carbon dioxide gas + water vapour

Page 21: Science 9 Unit 2 Review. Write the difference between: heterogeneous mixture and a homogeneous mixture a physical change and a chemical change an element.

Endothermic - Exothermic

• What is an endothermic reaction? Give an example of this type of reaction.

• What is an exothermic reaction? Give an example of this type of reaction.

Page 22: Science 9 Unit 2 Review. Write the difference between: heterogeneous mixture and a homogeneous mixture a physical change and a chemical change an element.

Rate of Reaction

• Describe the effects of the following factors on the rate of a chemical reaction:

• concentration

• surface area

• temperature

Page 23: Science 9 Unit 2 Review. Write the difference between: heterogeneous mixture and a homogeneous mixture a physical change and a chemical change an element.

Corrosion

• Write the chemical and the word equation for the corrosion of solid iron.

Page 24: Science 9 Unit 2 Review. Write the difference between: heterogeneous mixture and a homogeneous mixture a physical change and a chemical change an element.

Galvanization

• Why are some metal products, such as nails, galvanized?

Page 25: Science 9 Unit 2 Review. Write the difference between: heterogeneous mixture and a homogeneous mixture a physical change and a chemical change an element.

Combustion

• What are the beneficial effects of burning fossil fuels?

• What are the harmful effects of burning fossil fuels?s

Page 26: Science 9 Unit 2 Review. Write the difference between: heterogeneous mixture and a homogeneous mixture a physical change and a chemical change an element.

Explain the differences

• reactant and product

• catalyst and inhibitor

• chemical reaction and rate of reaction


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