Question

1. ______ is an educated guess or prediction about the outcome of the experiment

a) a theory\t\tb) an observation
c) a title\t\t\td) a hypothesis

1. a ______ is a visual display of data

a) excel sheet\t\tb) chart
c) graph\t\t\td) lab writeup

1. what do you call an educated guess or prediction in an experiment?

a) independent variable\t\tb) control group
c) data\t\t\td) hypothesis

1. name three pieces of lab safety equipment.

a) safety goggles, glass, thermometers\t\tb) beakers, chemicals, graduated cylinders
c) ponytail, glass, shoes\t\t\td) close - toed shoes, gloves, apron

1. what is a beaker primarily used for?

a) checking temperature\t\tb) moving liquid
c) measuring liquid\t\t\td) holding liquid

1. what are safety symbols used for?

image
a) the cool factor\t\tb) nothing
c) things to throw away\t\t\td) to inform you of hazards

1. is it okay to eat or drink in the lab?

image
a) no\t\tb) yes

1. flammable materials should never be placed near

image
a) a friend\t\tb) a lab partner
c) open flames

1. what is the name of the lab tool seen in the picture?

image
a) beaker\t\tb) tong
c) test tubes

1. before you use any glass where, you should...

image
a) do nothing\t\tb) just use it
c) inspect for chips or cracks\t\t\td) throw it away

1. when you see this safety symbol, what precaution must be observed

image
a) wash your hands\t\tb) do nothing
c) shake hands with your lab partner

1. i must follow all instructions, written and verbal, about the laboratory from the teacher.

image
a) true\t\tb) false

1. when this safety symbol is observed during a lab, you should know with what kinds of chemicals?

image
a) poisonous or toxic chemicals\t\tb) edible chemicals
c) regular chemicals

Explanation:

Each answer is based on standard laboratory safety, equipment, and scientific method definitions.

1. A hypothesis is defined as an educated experimental prediction.
2. A graph is a visual data display.
3. A hypothesis is an educated experimental guess.
4. Closed-toed shoes, gloves, apron are safety equipment.
5. Beakers primarily hold liquids (not measure precisely).
6. Safety symbols communicate potential hazards.
7. Eating/drinking in labs is prohibited for safety.
8. Flammable materials risk fire near open flames.
9. The image shows upright test tubes.
10. Glassware must be checked for damage before use.
11. The symbol indicates mandatory handwashing.
12. Following all teacher instructions is required lab protocol.
13. The skull-and-crossbones symbol denotes toxic/poisonous chemicals.

Answer:

1. d) A hypothesis
2. c) graph
3. d) Hypothesis
4. d) close-toed shoes, gloves, apron
5. d) holding liquid
6. d) To inform you of hazards
7. a) No
8. c) Open flames
9. c) Test tubes
10. c) Inspect for chips or cracks
11. a) Wash your hands
12. a) True
13. a) Poisonous or toxic chemicals