Which types of changes observe the law of conservation of mass?

a. only changes of state

b. only physical changes

c. only chemical changes

d. all of the above

What is an example of a natural light prism?

Does the earth have a nucleus

How old is Newton's first law? (i didn't see science as a subject)

Crystals are characterized by particular patterns that repeat in how many dimensions? A. three dimensions B. one dimension only C. two dimensions only

Describe the steps to balancing a chemical equation.

What is the molarity of a solution with 1.17 moles of Ca (OH) 2 disolved in 0.2 liters of water? A. 1.17 M B. 0.2 M C. 0.17 M D. 5.85 M

What happens to acetone molecules when you add heat to a beaker of liquid acetone?

An effluent discharge with a flow of 1.5 m3/s and an ammonium-N concentration of 2 mg/L is released to a river with a flow of 12 m3/s and an ammonium-N concentration of 0.015 mg/L.

If you were to pour 4 different liquids into a glass and the liquids separated into 4 layers, which liquid would have the highest density?

As magma rises to the surface what happens to the gases in it