Bellwork 9/20 – Update Table of Contents:

Clicker instructions

• Choose the best fit answer• Once I’ve given you enough time, the answers

will be “locked in” • I will then display class responses and be able

to go over questions a significant amount (15% or more) of our class missed

Hostedby

Ms. Murphy 2011

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Row 1, Col 1

The formula for density.

A) M= D/VB) D = M/VC) V = M/DD) None of the above

What is mass divided by volume?

1,2

Change in which the identity of the substance stays the same.

A) Chemical Change B) Physical ChangeC) An Indicator

What is physical change?

1,3

An example of this type of observation is to say “the tree is 5 feet tall”. A) Quantitative observationB) Qualitative observationC) VariableD) Observable data

What is a quantitative observation?

1,4

Zero degrees Celsius or 32 degrees Fahrenheit.A) Melting point B) Boiling pointC) Freezing pointD) A) and C)E) All of the above

What is the freezing or/AND melting point of water?

2,1

The part of an experiment that ischanged on purpose.A) Dependent VariableB) Responding VariableC) Independent VariableD) Manipulated VariableE) C) and D)

What is the manipulated (independent) variable? – C and D

2,2

The measure of the amount of matter in something.A) Amount of space an object Takes upB) MassC) VolumeD) Mass in a given Volume

What is mass?

2,3

The measure of the amount of space something takes up.A) DensityB) VolumeC) MassD) Weight

What is volume?

2,4

This must always be testable in an experiment.A) DataB) QuestionC) ConclusionD) Hypothesis

What is the hypothesis?

3,1

In an experiment seeing how type of paper affects paper airplane distance: throwing, speed, wind resistance, and design are all examples of these (Clue – they must stay the same as to not ‘mess up’ results)A) Independent Variables B) Dependent VariablesC) Controlled VariablesD) Parameters

What are controlled variables?

3,2

Rust, fire, and mixing vinegar with baking soda are examples ofthese.A) Physical ChangeB) Physical ReactionC) Chemical ChangeD) Chemical ReactionE) Chemical Properties

What are chemical properties?

3,3

Hardness, texture, solubility, and density are examples of these.A) Chemical propertiesB) Physical propertiesC) Quantitative observationsD) Chemical change

What are physical properties?

3,4

Density of liquid water.A) One gram per milliliter (or cm³)B) One milliliter per gramC) Zero grams per milliliter (or cm³)D) Zero milliliter per gram

What is 1 g/ml?

4,1

When the mass of water is 45 g, it’s volume is _________.

No choices… please work out on own

What is 45 mL?

4,2

The density of a block of woodwith volume of 25 cm³ and mass of 75 g.A) 0.25 g/ cm³B) 0.33 g/ cm³C) 3 g/ cm³D) 9 g/ cm³

What is 3 g/cm^3?

4,3

Ms. Dula wants to know if the type of food students eat at lunchaffects how well they do in school.The independent and dependent variables are _______________No choices… please work out on own

What is food type and how well students perform?

4,4

Ms. Relyea wants to experimentwith paper airplanes. She thinksthat using thick paper instead of regular paper will have an effect on how far the plane willfly. Write a hypothesis based on what she expects. *No choices… please work out on own

If the thick paper is used instead of regular paper, then the plane will fly farther.

5,1

How scientists check work of other scientists.

A) Making a ConclusionB) HypothesisC) CommunicatingD) Asking questions

What is communicating?

5,2

Tell the other name for both ofthe following:(1)Independent variable(2)Dependent variable

*No choices… please work out on own

What is (1) the manipulated variable and (2) the responding variable?

5,3

Ms. Murphy wants to do an Experiment with soda. She thinks that if she puts Diet Coke and Regular Coke into water, then the Diet soda will float. What are two variables that she will need to control? *No choices… please work out on own

What is water temperature, the way can is put in water, etc?

5,4

An unknown liquid has a densityof .96 g/mL. When water is placed in the same container asthe liquid, the water will _____.A) SinkB) FloatC) Hover in the middle

What is sink?