The Scientific Process
Lab Safety
Observation vs Inferences
Measurement
Density
100

The summary at the end of an experiment that explains the results is called the ...

conclusion

100

Which of the following is NOT a safe laboratory procedure? 

wearing goggles when working with chemicals

pulling back long hair and baggy clothing 

picking up broken glass with your hands

cleaning all equipment after it is used

washing your hands at the end of an experiment

picking up broken glass with your hands

100

Scientists are able to make observations and infer about their surroundings by using their ...

5 senses

100

The instrument used to measure the mass of an object is called 

a Triple Beam Balance

100

What is the correct formula for calculating density?

Density = mass/volume

200

 In a controlled experiment, how many independent variables can be worked with at a time? 

One

200

If you have been injured during a lab, the first thing you should do is...

Notify your teacher
200

State whether the following statement is an observation or an inference. 

There are four penguins shown in the picture. 

 

Observation

200

What is the basic unit of liquid volume in the metric system?

ml (mililiters)
200

Which box has a higher density?

Box A

300

A student wants to test the effects of type of exercise on heart rate.  What is the dependent variable?

heart rate

300

Correct the statement to make the statement true:

Laboratory work may be started immediately upon entering the laboratory even if the teacher is not yet present.

Laboratory work should not be started immediately upon entering the laboratory even if the teacher is not yet present.

300

Turn the following statement into an inference.

The penguins are standing on snow and ice. 

 

It must be cold. 

They are located somewhere cold.

Answers may vary. 

300

What is the measurement on the triple-beam balance shown? With units!

335g

300

Put the liquids in order from most dense to least dense?

4, 3, 2, 1

400

When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. What type of variable is the fertilizer?

Independent Variable

400

The following activity is permitted in the laboratory: 

A. chewing gum 

B. eating 

C. drinking 

D. None of the above.

D. None of the above.

400

Observe the image and make one observation and one inference based on your observation from the image. 

1 observation (5 senses)

1 inference (explaination)

400

A graduated cylinder contains exactly 60 mL of water. A rock was dropped into the cylinder of water. The water level rose to 86 mL. What is the volume of the rock?

26 mL 

(answer must include units!)

400

An object with which of the following densities will float on water? 


0.7 g/cm3

1.2 g/cm3

3.5 g/cm3

11.4 g/cm3

0.7 g/cm3

500


An experiment is performed on plants to see how different liquids affect plant growth. Each plant in the experiment is given a different liquid; water, apple juice, or milk. Each plant has the same amount of soil, sunlight, and listens to the same music. In this investigation, the independent variable is ...

The type of liquid

500

Identify 2 unsafe lab procedures from the image below and how to correct them. 

Identify 2 scenarios AND how to correct them.

500

Observe the image below. 

Make 2 quantitative observations, 2 qualitative observations and one inference based on your observations. 


 

500

A student used a metric ruler to measure the sides of a block of wood. The measurements were measured as 3.54 cm, 2.7 cm, and 4.85 cm. Calculate the volume of this piece of wood. To the nearest hundredth place with correct units. 

46.4cm3

500

The diagram below represents a solid object with a mass of 325 grams. Determine the density of the cube to the nearest TENTH.


2.0 g/cm3

M
e
n
u