Which pure substance is made of only one kind of atom?

A. An element

B. Am electron

C. A particle

D. A proton

Is this true or false. In a boreal forest biome, many trees shed their leaves and grow new ones each year

What is the hydronium h3o + concentration of a solution with a pH pf 3

How do elements join to form compounds?

Whic of the following are causes of cataracts select all that apply

The career area of chemistry which is involved in the manufacturing of products is:

What substance is a diatomic molicule

What does the atomic mass of an element represent

Which type of reaction is the Haber process: N2 (g) + 3 H2 (g) → 2 NH3 (g) + heat? * exothermic, with an increase in entropy exothermic, with a decrease in entropy endothermic, with an increase in entropy endothermic, with a decrease in entropy

What is the hydroxide ion concentration of a solution that has a pH of 9.630?

Arrange steps in order to describe what happens to a gas when it is cooled