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
Question
A change is a chemical change when it is accompanied by:
- A. energy change
- B. formation of new substances
- C. change in chemical properties
- D. All of the above
Solution
To determine if a change is a chemical change, we need to consider the following factors:
-
Energy change: Chemical changes often involve the absorption or release of energy. This can be in the form of heat, light, or electricity. If there is a noticeable energy change during the process, it suggests a chemical change.
-
Formation of new substances: In a chemical change, new substances are formed. This means that the original substances are transformed into different substances with different properties. If there is evidence of new substances being produced, it indicates a chemical change.
-
Change in chemical properties: Chemical changes involve a change in the chemical properties of the substances involved. This can include changes in color, odor, taste, or the formation of gas or precipitate. If there is a noticeable change in the chemical properties, it suggests a chemical change.
Therefore, the correct answer is D. All of the above. A chemical change is accompanied by an energy change, the formation of new substances, and a change in chemical properties.
Similar Questions
The identities of substances are the same before and after which type of change?A.A change of stateB.A physical changeC.A chemical changeD.No change
Which is not a clue that could indicate a chemical change? A Change in colorB Change in shape CChange in energy DChange in odor
Which of the following is a chemical change?*1 pointA) Ice melting into waterB) Sugar dissolving in waterC) Wood burningD) Cutting a piece of paper
Describe the difference between a chemical change and a physical change. What are three examples of physical changes?What are three signs that a chemical change has taken place?How does temperature affect chemical changes?
Which change can be easily reversed?1 pointChemical changePhysical changeBoth physical and chemical changeNeither physical nor chemical change
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.