Chemistry, 21.07.2019 06:00 kodaxmodz

While studying chemical and physical changes, students added salt to a glass of water. they stirred the salt until it dissolved and could no longer be seen. "that's a chemical change," sarah stated. do you agree? explain. a) yes, it is a chemical change because something new is formed. b) no, it is a physical change. it is salt and water and you can get the salt back by boiling off the water. c) yes, it is a chemical change because there was a change in the appearance of one of the components, the salt. d) no, it is a physical change. a chemical change cannot occur when you mix two compounds together like salt, nacl, and water, h2o, without adding heat.

Answers: 2

Show answers

Other questions on the subject: Chemistry

Chemistry, 22.06.2019 11:00, pindu

An object becomes electrically charged when: electrons are created in it electrons from it are destroyed electrons are transferred to it protons from it are destroyed protons are created in it

Answers: 1

continue

Chemistry, 23.06.2019 00:00, vanessacox45

Total the mass on the syringe. record it in the correct row of the data table. kg done click and drag weights to change the pressure. click the syringe to zoom in and see the volume. intro

Answers: 3

continue

Chemistry, 23.06.2019 03:50, timothymoles

Which best describes the activation energy of a chemical reaction? a. the combined energy of all the reactants b. the amount of energy required for a reaction to occur c. the difference in energy between products and reactants d. the potential energy stored in the bonds of reactants and products

Answers: 1

continue

Chemistry, 23.06.2019 12:00, loki285

Asubstance that will change shape to fit its container but has a definite volume is in a phase of matter

Answers: 1

continue

You know the right answer?

While studying chemical and physical changes, students added salt to a glass of water. they stirred...