Module 1 - Introduction To Chemistry And Lab Flashcards
The definition of mass is the space that something takes up
False
Which of the following is an example of matter?
A rock
Chemistry is the study of matter and the changes that it undergoes
True
You should prepare for each lab activity by reading all instructions while completing the lab assignment
False
Chemicals can be returned to their original containers after an experiment
False
The ________ was created to protect employees and students alike by setting the guidelines for workplace safety and health standards
OSHA act
Efforts to reduce hazards include all of the following except…
E-text books
Genetically modified organisms (GMOs) are never considered biohazards
False
Biohazards are a type of health hazard
True
All chemicals have the same safety precautions and first aid measures
False
Chemicals can be placed back in their original containers as long as they were not mixed with other substances
False
If chemicals come into contact with the skin, wash ___________ with water
Immediately
The inversion phenomenon refers to how, when looking through a microscope, what you think of as the “top” of the image is actually the bottom of the slide, and what you think of as the “right” is actually the left
True
The ___________ is the entire area that is seen when looking through an eyepiece
Field of view
___________ is the factor by which any image appears to be enlarged
Magnification
A systematic approach to studying the observable universe is the definition of the scientific method
True
Numerical data is an example of qualitative data
False
A testable prediction based on what has been observed is the definition of which of the following terms?
Hypothesis
The following paragraph is from a 1999 USA Today article titled “Heart care reflects race and sex, not symptoms.”
“Previous research suggested that blacks and women were less likely than whites and men to get cardiac catheterization or coronary bypass surgery for chest pain or a heart attack. Scientists blamed differences in illness severity, insurance coverage, patient preference, and health care access. The researchers eliminated those differences by videotaping actors – two black men, two white men, two black women, two white women – describing chest pain from identical scripts. They wore identical gowns, used identical hand gestures, and were taped from the same position. Researchers asked 720 primary care doctors at meetings of the American College of Physicians or the American Academy of Family Physicians to watch a tape and recommend care. The doctors thought the study focused on clinical decision making.”
Researchers rolled a four-sided die to determine which video each doctor watched.
Randomization was not used in the experiment.
false
The __________ provides a baseline for comparison.
control group
There can only be one control group and one experimental group
false
A pie chart is a representation of parts of a whole.
true
Which type of graph is this?
bar graph
The independent variable is what is manipulated by the scientist.
true
Interpreting or explaining your data belongs in the results section.
false
Most formal lab reports are written in…
third person
The reference section lists the references that were cited in the introduction and literature review only.
false
Which of the following is not an example of matter?
heat
The study of organic molecules and the changes they undergo is the definition of which of the five branches of chemistry?
organic chemistry
The study of the chemical processes within living things is the definition of which of the five branches of chemistry?
biochemistry
The study of physics phenomena within chemistry is the definition of which of the five branches of chemistry?
physical chemistry
The study of non-carbon-based molecules and the changes they undergo is the definition of which of the five branches of chemistry?
inorganic chemistry
Which of the following is the correct order for the scientific process?
observation, hypothesis, experiment, conclusion
Using the five senses to collect information about the world is the definition of which of the following?
observation
Which of the following is an example of quantitative data?
its mass is 3.5 grams
A set of controlled observations that test the hypothesis is the definition of which of the following terms?
experiment
The information and data taken from the experiment and carefully reviewed and compared to the hypothesis is the definition of which of the following terms?
conclusion
A student is curious which day they will walk their dog the longest that week. So, each night upon returning home, they record how long they walked their dog. Recorded below is their data.
Day of the Week
Time Spent Walking the Dog (Minutes)
Monday
25
Tuesday
10
Wednesday
10
Thursday
15
Friday
45
Saturday
90
Sunday
60
Which type of graph should be used for this data?
bar graph
A student wants to know how fast grass grows. They want to see if there is a relationship between time and height. They plant grass seeds and each week for two months, they record the average height of the grass. The data below shows their findings.
Week (Number)
Average Height of the Grass (Centimeters)
1
0.0
2
0.5
3
0.8
4
1.5
5
3.0
6
4.9
7
7.8
8
11.2
Which type of graph should be used for this data?
line graph
A visual representation of numerical data on both the x-axis and y-axis is the definition of which type of graph?
line graph
Which type of graph is this?
line graph
Which type of graph is this?
pie graph
