Which are made of matter?

classify the materials based on their composition rock, clear liquids, peppercoms, concrete, salt, oxygen, birdseed, plant

What chemical substance is formed when the oh and h is joined?

Nitrogen dioxide is a toxic, reddish-brown gas. what safety precautions are needed in this inquiry lab to protect against this hazard, as well as the hazards due to the use of concentrated acid?

Electron configuration of Phosphorus

Thorium is an element that occurs naturally in the earth's crust. The only naturally occurring isotope of thorium is 232Th and it is unstable and radioactive. The first step in the Thorium decay chain is the emission of an alpha particle.

What does a three letter chemical symbol mean

When 21.6 g of carbon were burned in the presence of 73.7 g of oxygen, 16.1 g of oxygen remained unreacted. What mass of carbon dioxide was produced?

How do you go from 2 mol of co2 to _ mol of c

What happens to the conductivity of water when an acid is dissolved in it?

How many gallons in 2 L bottle