Question 13) Electrons
Question 14) Ionic bonding
Question 15) The number of protons and neutrons
Question 16) Nuclear weapons can release much more energy than chemical reactions.
Question 17) An unstable ratio of protons and neutrons
Question 18) A homgenous solution
Question 19) An element
Question 20) Freezing
Question 21) The number of protons in an atom.
Question 22) have a full outer shell of electrons.
Question 23) Non-metals
Two or more kinds of alkenes (a type of monomer) can combine to form a polymers. Alkenes are a smaller kind of molecule that are joined through covalent bonds to form polymers (a larger molecule) and produce a different kind of substance.
To create polyester two different kinds of monomers called ETHENE and PROPENE are needed to make double bonds in the chemical reaction.
What kind of organisms existed in the past?
How did organisms move about? are some testable questions hat could be used to further investigate the topic of using the fossil record to identify changes in life on earth.
- Fossils are the remains of extinct plants and animals that have been encased in layers of rock.
- The existence of fossil records demonstrates how living things have altered or evolved over time.
- The specific order in which these species have lived has been identified by paleontologists. For instance, older rocks contained simpler species, while younger rocks contained complex life.
- Existence of species with transitional traits that are placed in sequential stratigraphic order is one pattern in the fossil record.
- This indicates that the fossil record demonstrates minute changes in the structures of creatures across time, supporting evolution.
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The eye structure that transmits and refracts incoming light is the: lens