How does litmus paper identify a base?

Explain how you can tell when a change is a chemical change.

An alloy is made up of more than one type of what?

How is energy transferred during the water cycle

Which two statements about an electric motor are true?

Earthquakes can ___ A. Trigger other earthquakes B. Cause tsunamis C. Cause billions of dollars in damages D. All of the above

A 1.50-g sample of hydrated copper (II) sulfate was heated carefully until it had changed completely to anhydrous copper (II) sulfate () with a mass of 0.957 g. Determine the value of x.

The reaction rate between reactants Z and Y is proportional to the cube of [Z]. What is the rate law for this reaction?

A metal surface becomes dull because of continued abrasion. chemical or physical

What types of tissues build the digestive system?

Chemical bonds? A.) Combine compounds to form elements B.) Hold atoms together to form compounds C.) Are always covalent D.) Are always ionic