What are the smaller, repeating units called that make up polymers?
monomers
100
This is the number of protons in the nucleus of each atom of an element
atomic number
100
This is a small particle that makes up most types of atoms on earth
atom
100
True or False:
A hypothesis must be testable
True
200
How many valence electrons does carbon have?
four
200
What are the three different structural arrangements of polymers?
linear, branched, and cross-linked
200
This is the sum of the an atom's protons and neutrons
atomic mass
200
These are atoms of the same element that have different numbers of neutrons.
isotope
200
The test group that does NOT receive the independent variable is called:
the control group
300
Is carbon an organic or inorganic molecule?
organic
300
What happens to the polymer as more bonds are formed in between carbons?
Polymers become stronger
300
The Periodic Table has groups and periods. What does the period number indicate each element within a particular period?
number of orbitals/shells
300
True or False- heat is matter
false
300
The variable that the experimenter manipulates and that is found on the x-axis of a graph.
Independent Variable
400
Where source does the carbon found in synthetic polymers come from?
Fossil Fuels
400
In 1869, the first synthetic polymer invented by John Wesley Hyatt. What was it called?
Bakelite
400
Name the person credited for developing the Periodic Table
Mendeleev
400
This is a negatively charged subatomic particle
electron
400
The responding variable is called
the dependent variable
500
True or False:
Carbon atoms can for single, double, and triple bonds.
True
500
When a polymer can be melted and re-shaped into something else, we say it is:
thermoplastic
500
Which two groups on the Periodic Table tend to form ionic bonds?
Group 1 and Group 17 (metals and non-metals)
500
This is a positively charged particle in the nucleus of the atom
proton
500
Something that an experimenter needs to have in place in an experiment to ensure that the results of the experiment are due to the effect of the independent variable