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Scientific Method and Lab Safety Review Flashcards | StudBud
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Scientific Method and Lab Safety Review
Scientific Method and Lab Safety Review
20 terms
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review for unit test
Flashcards
20 cards
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Questions
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Answers
1
What are the steps you use when conducting an experiment to test your hypothesis?
procedure
conclusion
data
observation
2
After completing an experiment, all chemical wastes should be
dumped in the sink
left at your lab station
disposed of as teacher directs you
taken home
3
What is a variable that is purposefully changed in an experiment?
controlled variable
independent variable
dependent variable
isolated variable
4
How many variables should you change in an experiment?
2
as many as you want
3
1
5
What is the best way to observe the smell of a substance?
put it next to your nose and inhale
fan the fumes toward you
let your partner smell it
have your teacher smell it
6
What do you do if your clothing catches on fire?
Smother it with a fire blanket
Wait for your partner to save you
Run to your teacher
Try and put out the flames yourself
7
What is an educated guess or prediction?
procedures
conclusion
hypothesis
data
8
Always point a test tube
toward you and others
away from you and others
away from you and toward others
toward you and away from others
9
If you run 3 trials and you don't get the results you expected - what do you do?
throw out the original and get a new hypothesis
don't do anything
try 20 more times
Ignore results and publish anyway
10
What must be worn when heating a substance or using chemicals?
hot mitts on your hands
a ponytail
safety goggles
a fire blanket
11
What is used in a test where all of the variables are controlled and used for comparison?
control group
independent variable
dependent variable
constants
12
What is the variable that responds to the change or is affected by it?
independent variable
dependent variable
isolated variable
controlled variable
13
What is a summary after an experiment that analyzes and evaluates your data and hypothesis?
data
procedures
Conclusion
hypothesis
14
What are experimental repetitions?
trials
constants
observations
control group
15
Which stage of the scientific process allows a scientist to share and check the work of others?
hypothesizing
observing
communicating
data collecting
16
What is the boy doing wrong?
wearing loose clothing
wearing flip flops
heating a substance towards his partner
using tongs
17
What is she doing wrong?
Not wearing goggles
not tying back her hair
having a cluttered workstation
all of these
18
When you have been injured in the lab, first you should
tell your teacher immediately
see a doctor after school
apply first aid yourself
visit the school nurse after class
19
When preparing for lab, if any directions are unclear you should
guess what to do
go ahead and begin
ask your partner or teacher
skip that part
20
Observations that deal with a number or amount are called?
quantitative
experimental variable
controlled variable
qualitative
