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More Scientific Method
Experiments
Some chemistry
Bits of chemistry
Water
100
A hypothesis is useful only if
it can be tested.
100
The ability to reproduce results is an important part of any
experiment.
100
The use of genetic engineering to produce medicines is an example of
technology
100
In chemical reactions, atoms are
rearranged.
100
When hydrogen and oxygen combine and form water, the water is
a product.
200
The idea that "all living things are made of cells"
is a theory.
200
A plant is not being watered enough, a plant is being watered too much, a plant is receiving too much sunlight
What are valid hypothesis for why a plant appears to be dying?
200
Oxygen, carbon, nitrogen, and hydrogen
What are the most common elements in most living things?
200
CO2 + H2O yields H2CO3 What are the reactants in this chemical reaction?
CO2 and H2O
200
Water molecules are polar, with the
oxygen side being slightly negative and the hydrogen side being slightly positive.
300
Biology is the scientific study of
life.
300
Brown artifical snakes were included in Pfennings' experiment because
brown snakes were needed as a control.
300
A substance formed by the chemical combination of two or more elements in a fixed ratio
a compound.
300
its molecules are less densely packed than those in liquid water
Why ice floats on water.
300
pH means percent hydrogen - on the scale what is more acidic 4.22, 4.3, 4.35, 4.40?
4.22
400
An experiment that tests the effect of a single variable is called
controlled experiment.
400
A falsifiable hypothesis
can be proven incorrect.
400
Radioactive isotopes used in research and medicines are
used to observe what happens to different atoms within organisms.
400
Protons, neutrons, and electrons
What are the particles that make up an atom?
400
What is a monosaccharide?
carbohydrate.
500
A well-tested explanation that makes sense of a great variety of observations is
a theory.
500
A hypothesis
may be disproved by a single experiment.
500
What type of ion forms when an atom loses electrons?
positive
500
A covalent bond is formed as the result of
sharing an electron pair.
500
Defend the body from harmful organisms, control chemical reactions, and build structures such as muscles.
What are the functions of proteins?