Which describes the relationship between a monomer and a polymer? a monomer is a type of polymer made of only one element. a collection of monomers combines to form a polymer. a substitution reaction changes a monomer into a polymer. a monomer is a type of polymer that forms from carbon chains.

A collection of monomers combines to form a polymer.

Explanation:-

Polymer is a macromolecule formed by the combination of simpler units called as monomers.

Polymers are of two types:-

Addition polymers : A polymer in which small units called as monomers are simply joined to form a bigger molecule called as addition polymer.  Example:

Condensation polymers : A polymer in which small units called as monomers are joined along with release of small by products to form a bigger molecule called as condensation polymer.

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance

the food using pesticides in the future will harm you by giving you diseases like cancer or something since they have things that we should not eat in it like chemicals or pesticides. that is why organic food is more expensive because they take the time to make it right and healthy for you to eat.

explanation: