Biology, 25.11.2019 06:31 brenda0014
6. a chemist wants to build a model of an element using a box. what should the box be filled with to
illustrate the relationship between atoms and elements?
a. red marbles because bonds form between atoms that are the same
b. red marbles because an element is made up of atoms that all have the same properties
c. an equal number of red and blue marbles because an element is made up of an equal ratio of atoms
d. an equal number of red and blue marbles because bonds form between atoms that have different
properties
polyethylene is a flexible substance that is used in some plastic bags. the picture shows a model of
polyethylene
Answers: 1
Biology, 22.06.2019 16:30
The earth formed roughly 4.5 billion years ago, yet evidence of life dates back to about 3.5 billion years ago. which one is not a possible hypothesis of how life on earth arose?
Answers: 3
Biology, 23.06.2019 00:40
Specific heat is the amount of heat required to raise the temperature of a material by 1°c per what unit? a. volumeb. joulec. massd. pressuree. density
Answers: 3
6. a chemist wants to build a model of an element using a box. what should the box be filled with to...
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