Chemistry
Chemistry, 27.08.2019 16:30, skyrileycasting

What is the major difference between chemical and physical changes?
a. chemical changes always involve the release of some gas, which is not the case with physical changes.
b. physical changes always involve the release of some gas, which is not the case with chemical changes.
c. new substances are always produced in chemical changes, which is not the case with physical changes.
d. new substance are always produced in physical changes, which is not the case with chemical changes.

answer
Answers: 1

Other questions on the subject: Chemistry

image
Chemistry, 22.06.2019 06:30, backup5485
Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line
Answers: 1
image
Chemistry, 22.06.2019 08:30, chloe4740
Which of the following would have less momentum than a 52 kg cheetah running at 10 m/s?
Answers: 2
image
Chemistry, 22.06.2019 18:50, cj31150631
Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.
Answers: 1
image
Chemistry, 22.06.2019 19:00, HaydenSturgis1
Which is the solubility product expression for caf2(s)?  [ca2+]/[f–]2  [ca2+][f2–]  [ca]+[f]2  [ca2+][f–]2
Answers: 3
Do you know the correct answer?
What is the major difference between chemical and physical changes?
a. chemical changes alway...

Questions in other subjects: