# Notes on Physical Science - Forces Unit

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Properties of matter
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Catalyst

Be silent when the bell rings

Draw a graph of velocity, with respect to time. When velocity
is less than zero, which direction is the object moving?

Write down equation for momentum
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
If I increase mass what happens to momentum? How else can I
increase momentum?
Write down any sentence that helps you make sense of
relative velocity
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Plan for today
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We take this test
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Y’all demonstrate your proficiency and attentiveness
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Phone bank
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We classify everything in the world around us
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(starting with measurements)

Look closely at significant figures
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What is a classification?
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A way to distinguish things by shared properties
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Make a classification scheme for the things in the classroom
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Elements, Compounds, and Mixtures
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Unit Conversion
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Let’s go through a few examples together.

1 hour = 60 minutes
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1 minute = 60 seconds
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1 kg = 1000 grams
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1 kg = ~2.2 lbs.
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1 mile = 5280 feet
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1 foot = 12 inches
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Catalyst 9/16

Students should be seated silently when the bell rings
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Students should turn homework into the bin at the front

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How can you distinguish an element from a compound?
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How can you distinguish a compound from a mixture?

What is the difference between something heterogeneous and
something homogeneous? Use context clues if that is a new word
for you.
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Objectives for the day
Unit
2.1.1
Classify
matter as homogeneous or
heterogeneous; pure substance or
mixture; element or compound;
metals, nonmetals, or metalloids;
solution, colloid, or suspension
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To accomplish these we will:
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
Group up and create
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Present and participate
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Take some notes
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Significant Figure practice
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Catalyst
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Review

Draw a graph for each of the following with a constant
acceleration

Position on the y axis

Velocity on the y axis
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Acceleration on the y axis

What should always be on the x axis?
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Today we will
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Review algebra and graphing
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Review worksheets handed in so far
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Review the posters from yesterday
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Go over significant figures – finish the worksheet
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Discuss plan for next week
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In groups of five

Create a presentable graphic that explains the main points of
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Group 1: Elements versus Compounds versus Mixtures
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Group 2: Heterogeneous versus Homogeneous
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Group 3: Solutions, Suspensions and Colloids
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Group 4: Viscosity, Conductivity, malleability, and hardness
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Group 5: Melting/Boiling Points and Density
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How to use physical properties
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To separate mixtures:
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Filtration

Distillation
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Significant Figures
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http://www.usca.edu/chemistry/genchem/sigfig.htm
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