During a chemical change, which will not happen?(A) New substance formed (B) Energy changes are involved(C) It is a permanent change (D) Only state of the substance is changed

During a chemical reaction new substances are formed from old ones. Which of the following is NOT ALWAYS true?     [1]ANew substances can be changed back to the original onesBThere is often a colour changeCThere is often a temperature change

Which of the following is not true about chemical changes in matter?Question 7Select one:a.Heat, light, or electrical energy is often emitted or absorbed.b.Changes in state, changes in particle size, and the formation / separation of mixtures are all examples.c.Reactivity changes with the formation of new substances.d.Alters the makeup of a substance.

A change is a chemical change when it is accompanied by:A.energy changeB.formation of new substancesC.change in chemical propertiesD.All of the above

what must always happen during a chemical change.Light is releasedHeat is releasedThe colour changesAt least one new substance is formed

What happens during a physical change?*1 pointA) A new substance is formedB) The chemical composition of the substance changesC) The substance retains its chemical propertiesD) The substance undergoes a reaction with another substance