2.) 100 grams of the element iron . A. is a mixture
B. has the same melting point as 100 grams of nickel
C. contains atoms that are all alike
D. can be separated into a simpler substance through chemical means

3.) Water molecules .

A. are comprised of 2 hydrogen atoms bonded to 1 oxygen atom
B. are a great solvent due to their shape
C. have the same properties as both hydrogen and oxygen atoms
D. two of the above

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

your answer would be “dry”

explanation:

0.07 g/cm³

1.37 g/cm³