Chemistry Unit 1 JeopardyYou Know I’m

Precise

I’m…ugh…Dense How Do You Measure Up?

You Call That Experimental?

We All Undergo Changes

100 100 100 100 100

200 200 200 200 200

300 300 300 300 300

400 400 400 400 400

500 500 500 500 500

ONLY precise. Close together but not near the actual value.

You measure a table three times and get 89.3cm, 89.5cm and 89.2cm. If the table’s length is actually 74.3cm your

readings are…

1,2

Describe why an object sinksor floats

Sink – more dense than liquid. Float – less dense than liquid.

1,3

Measure correctly

What is 35.0 mL?

1,4

Sally says that eating breakfastincreases performance in school.What is the dependent variable?

Performance in school/grades

1,4

You get angry at a friend and throw their ipod out the window. It hits theground and smashes into 20 pieces.

What type of change is this?

What is Physical?

2,1

Your friend Julie is playing darts and throws these 4 darts. She is…

Accurate & Precise

2,2

What is the density of an object with a mass of 24g an a volume

of 17ml?

1.41g/mL

2,3

What is 220 mL?

2,4

You believe that cell phone’s batteries

will last longer if they are kept in a plastic bag when not in use.

What would be your independentvariable, dependent variable?

IV: whether phone is in bag or not. DV: battery life

1,4

You pour 2 clear liquids into a bag

and a red solid forms.Type of change?

What is a chemical change?

3,1

Define Accuracy

The act of being close to the actual value

3,2

If an object has a density of 17.4g/mL and a volume of

19mLwhat is it’s mass?

331g

3,3

What is 76.0 mL?

3,4

Your principal claims that stresslevels will increase due to higheramount of homework assigned.

So this week he says half ofclasses should have half theirnormal homework assigned.

What is your IV, DV and control group?

IV: amount of homework assigned. DV: stress levels of students. Control group: students with normal amounts

of homework.

1,4

You walk into your kitchen and see

bubbles coming from a potas water is boiled to make pasta.

Type of change?

What is physical? Same substance

4,1

Can you be precise without being accurate? Explain

Yes. You can be consistent and off from the actual answer or value.

4,2

Object has density of 0.65g/mLand a mass of 14g what is it’s

volume?

21.54 mL

4,3

What is 13.81mL?

4,4

Your mother wants to see ifhummingbirds like a certain color

feeder best. So she puts 3 feeders inbackyard by each other. 1 blue, 1 red

and 1 green.What is her IV, DV, and constants?

IV: color of feeder, DV: number of birds that show up, constants: all in her backyard.

1,4

You grill a hamburger!!!!Type of change?

What is Chemical?

5,1

Daily Random! – What letter is not on theperiodic table of elements?

J

5,2

If you have 3000g of lead howmuch space would it take up?

265.49mL

5,3

What is 21.31mL?

5,4

RANDOM: Which of the followingis the biggest?a.An elephantb.The moonc.The sun

d.The earth

The sun.

2,4

You go camping and start a fire and roastMarshmallows for s’mores. You then hang an

iceblock over the fire to melt and put out the fire.What are the chemical changes that occurred?

What is Starting the fire & cooking marshmallows?