The change which results in the formation of one or more new substances with new composition is known as a chemical change.a.Trueb.False

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

A chemical change occurs when:a new substance is createda substance looks different from beforea substance's physical properties changetwo substances are mixed togetherI'm not sure

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

What kind of change forms a new substance?A.A phase changeB.A solubility changeC.A physical changeD.A chemical changeSUBMITarrow_backPREVIOUS

Which of the following is an example of a chemical change?A.A solid reacting with a gas to form a new solidB.A liquid evaporating into a gasC.A mixture of a solid and a liquid formingD.A solid dissolving in a liquid