Download SCIENCE 9 MID

SCIENCE 9 Matter REVIEW
Name:________________________
Definition/ Concepts
Pure Substance
Pure Element
Pure Compound
Mixtures
Heterogeneous
Homogeneous
Atoms
Protons
Electrons
Neutrons
Question One
Symbol
Atomic
Number
Mg
Atomic
Mass
# Protons
# Electrons
# Neutrons
24.31
4
9
5
19.00
16
S
14.01
Question Two
1. This word means easily shaped____
2. Easily stretched into a wire ____
3. Refers to the ability to conduct electricity____
4. Made up of tiny cubes or blocks ____
5. The amount of matter per unit volume ____
6. This refers to how easily a liquid flows_____
7. This refers to how easily a liquid dissolves in water___
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A. Solubility
B. Malleable
C. Viscosity
D. Conductivity
E. Crystal
F. Density
G. Ductile
Question Three
Decide whether the following changes are chemical or physical. Also, give an explanation to
why.
1. Burning of a Building
Physical or Chemical
Why:________________________________________________________________________
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2. Adding Sugar to Lemonade
Physical or Chemical
Why:________________________________________________________________________
3. Water changing to steam
Physical or Chemical
Why:________________________________________________________________________
4. Rusting of Iron
Physical or Chemical
Why:________________________________________________________________________
5. Leaves changing Colour
Physical or Chemical
Why:________________________________________________________________________
6. Milk turning Sour
Physical or Chemical
Why:________________________________________________________________________
7. Baking Rolls
Physical or Chemical
Why:________________________________________________________________________
8. Ripening of Tomatoes
Physical or Chemical
Why:________________________________________________________________________
9. A stick broken in half
Physical or Chemical
Why:________________________________________________________________________
10. Gas bubbles
Physical or Chemical
Why:________________________________________________________________________
Question Four
List the 4 signs of a chemical change.
1.______________________________________________________________
2.______________________________________________________________
3.______________________________________________________________
4.______________________________________________________________
Question Five
Draw a Bohr diagram for the following elements.
A) Na
B) C
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C) F
D) Ar
Question Eight. Density Questions- Don’t forget to show all your work for full marks.
A) The density of wood is 0.62g/cm3. Find the mass of a block of wood 32cm by 5.8cm by
3.6cm.
Given:
Paraphrase:
Required:
Analysis:
Solution:
B) A metal alloy has a mass of 500g and a volume of 75 cm3. What is the density?
Given:
Required:
Analysis:
Solution:
Paraphrase:
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C) A block of brass is 8.4 g/cm3. What volume of brass will be needed to make a 500g weight.
Given:
Paraphrase:
Required:
Analysis:
Solution:
Question Nine
Counting Atoms
Determine the number of each type of element in the compounds below. Be sure to write the full
name of the elements along with the number.
1) K2CrO4
2) 4 Al2(CO3)3
Question 10
Groups on the periodic table.
1) Why are noble gases un-reactive? Where are they located on the periodic table?
2) What is a property of alkali metals? Where are they located on the periodic table?
Question 11: Classifying Matter
Classify the following matter.
(Pure Substance or Mixture and then: Element or Compound / Heterogeneous or Homogeneous)
A) Chocolate Chip Cookie Dough
B) Vanilla Soft Serve Ice Cream
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C) Diet Coke
D) Fluorine (F)
E) Carbon Dioxide (CO2)
F) Salt dissolved in water (NaCl + H20)
G) Uranium (U)
Question 12: Atomic Theory
Place the following images of atomic models in order of development, one being the first and four
being the most current. Also add the name of the scientist or name of the model used. (4)
_____
_____
____
_____