Answer:
The energy needed to change the temp of a substance
Explanation:
Explanation:
DNA is composed of large amount of amino acids and have a lot of amide groups .
Therefore , in the acidic or in basic medium , the DNA molecules is either dissociated or dis stabilized via protonation or de protonation .
<u>The double helix structure of the DNA may break or get dis ordered .</u>
But , from the question , In sodium phosphate buffer at pH = 7.0 , is the neutral condition , hence , the DNA remains unchanged , because of the neutral medium .
And in pure water ,
The DNA molecule remains intact as , in pure water , there are no ions .
Chemical properties describe how a material will react in a chemical reaction.
Physical properties describe such as color.
volume and mass are not properties, they are amounts. Density is a physical property because it s the ratio between mass and volume and does not change with amount.
Temperature is not a property.
Calories would be a chemical property because it describes chemical bonds. Energy is stored in the chemical bonds.
Chemical properties of the cake would be that it burns, another could be that it spoils, can be digested,
Did not understand the second question
C because the plant needs water to go through photosynthesis