Sunday, September 12, 2004

Lesson 2

The following is a review for your quiz for Monday September 20, 2004. Please complete it on your own time and feel free to email me with any on SATURDAY OR SUNDAY. If you have questions during the week, make an appointment to see me at school.

Some of the material will look a little strange so I'll also put a link to download this review as well.
Chemistry Quiz Review
Science, Gr. 9
Atoms & Elements Unit

Unit 3 Review

A. Measurement & Metric Conversions

1. Convert the following:

8.2034 mJ = ____________ cJ 88.45 cL = ____________ uL

0.09 cm = ____________ mm 4096 B = ____________ kB

0.0476 kJ = ____________ cJ 1 100 000 mL = ____________L


B. Particle Theory of Matter

1. Draw an ice cube in its solid, liquid, and gaseous state, using the particle theory:







solid






liquid






Gas

2. There are five different names for what happens when a substance changes state. Draw arrows between each state of matter with the name for the change (both directions!).



Solid Liquid Gas


freezing


C. Physical & Chemical Properties and Changes

1. Show that you understand the following properties of matter BY READING THE DEFINITION IN YOUR NOTES AND EXPLAINING IT IN YOUR OWN WORDS:

State Malleability

Crystal shape Solubility

Viscosity Combustibility (chemical)

Reacts with acid



2. What type of (physical or chemical) change occurs:

a) mixing salt and pepper ________________

why: _________________________________________________________________________

b) burning a log ________________

why: _________________________________________________________________________

d) demolishing a car ________________

why: _________________________________________________________________________

e) baking a cake ________________

why: _________________________________________________________________________

C. Mixtures
1. Complete the table: (Use your notes!)

Mixture Type
Explain what this mixture is
Hetero/Homo-genous?
Two examples
solution







1.

2.
alloy





1.

2.
mechanical mixture






1.

2.
colloid



1.

2.



D. Elements and the Periodic Table

1. Use the periodic table to complete these tables:
Symbol
Element name
Atomic #
# of Protons
Pd



Nitrogen


74


Symbol
Element name
Atomic #
# of Protons
Co



8
92

F. Chemical Formulas

1. Complete this table

Name of Substance
Chemical Formula
Compound or Element?
Elements present
How many atoms of each element?
helium gas
He



iron (II) sulfate
FeS04 - 5H2O



iron (II) nitrate
Fe(NO3)2



sulfur trioxide
KI




G. Models of the Atom, Elements and Isotopes

1. Draw an atom with 7 protons, 7 neutrons, 7 electrons. Label all parts, including the nucleus.
Label the electron shells (K, L, M)






What is its overall charge? _______ What element is it? __________
What is the full isotope name? ____________

Calculate the atomic weight.




2. Draw an atom with 1 proton, 2 neutrons, and 1 electron. Label all parts, including the nucleus.
Label the electron shells (K, L, M)






What is its overall charge? _______ What element is it? __________
What is the full isotope name _________

Calculate the atomic weight.




H. Density

1. What does density mean?




2. Why does a diet pop float, and a regular pop sink?




3. What is the equation for density, volume, and mass?

d =


V =


M =



4. What is the density of an unknown metal that is 35 cm3 in volume, and 225 g in mass?





5. Water fills a container 200 mL in volume, and has a density of exactly 1 g/ml. What is its mass?





6. A block of silver has a density of 10.5g/cm3. What is the mass of a block 3 cm x 3 cm x 3 cm?









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