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On Elements And Compounds
What are chemical and physical properties? What's the difference between physical and chemical changes?
Answer, a physical property is shape, color, weight, ect. A chemical change is when you take bleach and colored water and mix them and the water turns clear.
Number 2
What evidence can you use to identify the formation of a new substance from a chimacal change?
There could be color change, temprature change, gas forms, and solid forms.
How are properties of substance used to determine if a possible chemical change occurred?
If you mix 2 or more chemicals together wait and see if the color or temprature change.
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What would happen when gasoline is put into a gas engine?
When you put gasoline in the tank it is changed into carbon dioxide{CO2} and water{H2O}.
What must happens when an air bag does it's job and protects you from impact?
A chemical change. There is a carefully controlled explosion that shoots out an airbag from the dashboard.
If you were to burn a scented candle would it be a safe conclusion tat the scent is from a chemical change?
Yes, here is why, odor in this case is scent is produced as a chemical change and odor falls in that catogory.
How could you make an experiment using 3 different powder and water to see if they would react with each other or make a substance?
Take 6 cups of water and your 3 powders of choice and 6 choices of measurments and examine closely for a color change, gas form, temp. change, solid form.