Newest Information

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.

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.