Why do atoms receive a positive or negative charge when they give or take electrons? Include the nucleus in your

explanation.

Scientist noticed that the ozone layer was thinning. what was occuring at the same time

A triple bond is a bond between two atoms where six electrons are shared between them. True or False

What is the molar mass of chromium? 24.00 grams/mole 52.00 grams/mole 6.02 x 10^23 grams/mole 1.0 gram/52.00 moles

What is the dropping of a sediment called

How many moles of CaO will be produced from 23.9 g of Ca? 2Ca (s) + O2 (g) - 20:0 (3) mol

A change in the properties of matter where chemical bonds are broken and new bonds are formed is a.) a chemical change b.) a physical change c.) an ionic change d.) a covalent change

Write a chemical equation for the chemical reaction in which calcium carbonate (CaCO3) produces calcium oxide (Cao) and carbon dioxide (CO2).

How do you know the difference between a compound and mixture?

A 68.4-g sample of potassium chloride was added to 200.0g of water at 20 degrees C. Is the solution saturated, unsaturated, or supersaturated?

If concentrated sulfuric acid is spilled during the experiment, what is the proper procedure for cleaning the spill?