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Study Guide
Properties and Changes
| Question | Answer |
|---|---|
| What is the characteristic of a substance that can be measured or observed without changing the identity of the material? | Physical Property |
| Which is not a chemical change? | The melting of ice |
| Which is not evidence of a chemical change? | The change of phase |
| Which of the following is an example of chemical change? | Iron rusting |
| What is the difference between a chemical and physical change? | A physical change can be measured by the 5 senses without changing the substance and a chemical change changes the substance. |
| What is the difference between a chemical property and a physical property? | A physical property is the characteristics of a substance that do not change the chemical bonds of a substance. A chemical property is the ability to make a chemical change. |
| What is the difference between a chemical property and a chemical change? | A chemical change when one substance reacts with another substance to make a new substance. A chemical property is the ability to make a chemical change. |
| What is the difference between a physical property and a physical change? | A physical property is the characteristics of a substance and a physical change is the change of a substance's physical properties that does not change the substance. |
| Why is boiling water not a chemical change? | Boiling water does not change It's substance it just changes it's physical properties so therefore it is not a chemical change. |
| What is a reaction that starts with one chemical and results into the formation of 2 new chemicals? | Decomposition |
| What type of reaction will combine 2 simple chemicals into one complex chemicals? | Synthesis |
| What chemical reaction will replace one element of a compound with another element? | Single Replacement |
| What reaction type will 2 molecules swap elements with each other? | Double replacement |
| If a chemical reaction such as photosynthesis begins with 6 atoms of carbon how many atoms of carbon should be in the product? | 6 atoms of carbon |
| If a chemical reaction produces 2 new substances and each substance has a mass of 25 grams, what is the total mass of the reactants? | 50 grams |
| How does a balanced equation satisfy the Law of Conservation? | A balanced equation satisfies the Law of Conservation because you end with the amount you started with and nothing has been taken away or added to it. |
| What is the difference between a molecule and an atom? | An atom is a single element and a molecule is a combination of atoms. |
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allwea2947
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