While performing an experiment involving a reaction between two chemicals, the scientist observes that the reaction container has become warm. the observation is an example of: qualitative data quantitative data both qualitative and quantitative data the observation is not considered data

If he measures "How much warmer [which he should]," then he would be measuring quantity and B would be the answer.

Since he is only observing that the reaction container has become warmer, then qualitative data is all that he is measuring. The answer is A

C is not true "How much warmer" is not answered.

The observation is not a number but  it is a property. It is qualitative as color would be. (If a reaction changes color it would be qualitative).

b. th3 n4zc4 pl4t3 15 c0nv3rg1ng w1th the s0uth 4m3ric4n pl4t3.

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.