Show:
Bunsen Burners
Data Analysis
Data Collection
Density
Scientific Method 5
100

What is a bunsen burner used for?

heating up a substance

100
How do I find an average?

Add them all up and divide by how many there are

100

What's one way to heat up an object in the lab?

hot plate or a bunsen burner

100

What is the equation for density?

mass / volume = Density

100

What's an independent variable?

The part of the experiment you manipulate / change between trials

200

How many types of flames does a bunsen burner produce?

2

200

What's the average of 100, 100, and 400?

200

200
How does the displacement method work?

Read the volume before and after you submerge the object and the difference in volume is the volume.

200

What do we measure mass in?

grams 

200

What's a dependent variable?

What you're measuring.

300

What controls the flame height?

the needle valve

300

What's the equation for percent error?

Calculated - Actual Answer     X 100 = Percent Error

   Actual Answer

300

How do I read a graduated cylinder?

Put it on a flat surface, get down at eye level, read from the bottom of the water curve.
300

What do we measure volume in?

mL or L, m3 or cm3

300

Why is a control group or a controlled variable important?

Serves as a reference

400

What controls the flame color?

The air port

400

What are two things a good graph should have?

has a labeled x axis, has the x axis on the horizontal (side to side part) of the graph, has categories for the x axis (blue, red, purple, etc.), has a labeled y axis, has the y axis on the vertical (up and down part) of the graph, has a scale for the y axis (0, 5, 10, 15, etc.), has a title that starts by saying ‘Figure 1.’, has a title below the graph, is organized and easy to read, data is color-coded





400

What is the balance for?

obtaining mass

400

What are the units for density?

g/ mL

g/ cm3

kg / L 

kg/ m3

400

What should you do after you have a question or have made an observation?

Do research

500

How should I adjust a bunsen burner to get a small orange flame?

Close the air port and almost completely close the needle valve.

500

Your calculated answer was 6. The correct answer is 7. What is your percent error?

-14.29%

500

Could I use an Erlenmeyer flask to measure volume accurately?

No

500

If something has a density of 0.8 g / mL, will it sink or float in water?

Float

500

A scientist conducted an experiment to determine how the amount of salt in a body of water affects the number of plants that can live in the water. In this experiment the independent variable is

the amount of salt