25-01-2015
Chemistry

Answered

what happens to the chemical identity of a substance during a physical change?

Answer :

k12clee k12clee

27-01-2015

Nothing happens because a physical change only changes the appearance of the substance, whereas a chemical change transforms the substance into something completely different.
i.e. (chemical change) wood + fire = ash
(physical change) wood + axe = smaller pieces of wood

Answer Link

Other Questions

Which of the following is considered a component of companionate love?O ExcitementO InfatuationO Deep affectionO PassionO Physical attraction

______ cells mature in the bone marrow and are responsible for the production of glycoproteins called antibodies, or immunoglobulins.a. Bb. Tc. Neither of these

Which of the following characteristics means transferring the burden of risk from one person to another?a. Payment of fortuitous lossesb. Pooling of lossesc. Ri

Larry talbot 68 years old had a full month of end-stage dialysis services with three face-to-face visits by his physician. This is reported with code

Which one of these is not one of the five supporting objectives of managerial accounting?A) Providing information for planning and decision-making.B) Assisting

the sale closest to the nucleus in an atom has lowest or highest energy

At what breath alcohol level would a boater be considered "Under the Influence" in Florida?A. 0.02B. 0.06C. 0.07D. 0.08

Verify the following identity:[tex]\[ \cos ^4 \frac{\pi}{8} + \cos ^4 \frac{3 \pi}{8} + \sin ^4 \frac{5 \pi}{8} + \sin ^4 \frac{7 \pi}{8} = \frac{3}{2} \][/tex]

Explain the concept of electronic system-level (ESL) design.

Which of the following is NOT an important factor in explaining why and how cities develop in particular areas? 1. The area has a skilled labor force2. The area

0.88 belongs to: a) natural numbersb) integers c) rational numbers d) irrational numbers e) real numbers

A force F of strength 20 N acts on an object of mass 3 kg as it moves a distance of 4 m. If F is perpendicular to the 4 m displacement, the work it does is equ

what is 7/12 divided by 14/15

How do you get the sum of the numbers 56 and 64 as the product of their greatest common factor and another sum

how do you solve this

How do I rotate a parabola from opening up to opening horizontally?

What impact did events in Russia have on the need for American land forces in Europe?

Explain why science and technology were so important in colonial America.

A machine is designed to lift an object with a weight of 12 newtons. If the input force for the machine is set at 4 newtons, what is the mechanical advantage o

Why did Gandhi chose the spinning wheel as the symbol of Indian independence?