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Study Guide

Properties and Changes

QuestionAnswer
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.
Created by: allwea2947