Why does a molecule exhibit POLARITY?

b/c a water molecule has 2 opposite charges on either side

What unique property of water allows ice to float?

water expands and becomes less dense when it freezes

Which is the following is NOT a goal of science?

to use data to support someones particular point of view

Which is true about scientists?

They accept all new ideas if they are back by evidence

What benefit does a high specific heat provide for organisms?

allows organisms to maintain a stable internal environment

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Biology Test 1

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What is Science, Scientific Method, Properties of Water

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Questions 16

Answers

1
Scientists publish the details of important experiments so that:
their work can be repeated
their experimental procedures can be reviewed
all of the above
other can try to reproduce the results
2
Why does a molecule exhibit POLARITY?
b/c a water molecule is naturally bent at an angle
b/c water molecules spend most of their time in liquid form
b/c a water molecule has 2 opposite charges on either side
b/c electrons form a magnet due to the pull of the Earth
3
What type of graph is used for CONTINUOUS (time) data?
pie
circle
line
bar
4
Which variable is the MEASURED variable?
constants
control group
dependent variable
independent variable
5
Scientific hypotheses must be proposed in a way that:
ensures that an experiment will be valid
doesn't contract previous hypotheses
enables them to be proved valid
enables them to be tested
6
What unique property of water allows ice to float?
water forms hydrogen bonds with water and other substances
water expands and becomes less dense when it freezes
water absorbs heat when it evaporates and forms a gas
water molecules completely separate into ions
7
Which is the variable that we manipulate, or change?
constant
dependent variable
control group
independent variable
8
Which is the final step of the scientific method?
hypothesizing
making observations
publishing the data
interpreting data
9
Water is considered the universal solvent. Which property of water gives it this quality?
high surface tension
High specific heat
neutral pH
polarity
10
What is NOT one of the 6 main properties of water
Adhesion
Cohesion
High Specific Heat
Non-toxic
11
Which is the following is NOT a goal of science?
to explain events in the natural world
to use derived explanations to make useful predictions
to use data to support someones particular point of view
to investigate and understand the natural world
12
Which is true about scientists?
They do not like accepting new ideas
They never change their ideas based on new observations
They accept all new ideas
They accept all new ideas if they are back by evidence
13
Which of the following are the variables that must be kept the same among experimental subjects
independent variable
constants
dependent variable
control group
14
Which type of graph is used for comparing different, DISCONTINUOUS data
Line
Circle
Bar
Pie
15
What is the name of the variables that are kept the same throughout the experiment?
Constants
Independent Variable
Control Group
Dependent Variable
16
What benefit does a high specific heat provide for organisms?
allows organisms to maintain a stable internal environment
organisms functions with a high cellular pH
the ability to dissolve non polar compounds
provides the appropriate catalyst for chemical reactions

Biology Test 1 Flashcards | StudBud