What is changed when matter undergoes a physical change?

What types of salts are added to fireworks to give them color

How many molecules of co2 form when 2.00 g of c2h5oh are produced?

The general geographic location of a large low-pressure system is a. the North Pole. c. the tropics. b. the South Pole. d. 30 degrees latitude.

How many moles of nitrogen are contained in 1.61 x 10^24

A j shaped curve is called

Constance is making a vegetable soup that contains carrots, beans, water, salt, pepper, bits of ham, and onions. the soup has to cook for 4 hours. while the soup is cooking, what will happen to some of the minerals that are in its ingredients?

Which of the following form solid solutions? Select all that apply. naturally occurring minerals gases present in air HCl and water sugar and water metal alloys

Alan's go-kart travels 1750 feet per minute, and Barry's go-kart travels 21 miles perhour. Who's go-kart travels faster?

What needs to happen for a solute to dissolve in a particular solvent? A) the attractions between the solute and solvent molecules must be greater than the attractions keeping the solute together and the attractions keeping the solvent together.

Which is a conversion factor for this statement of equality: 12 in. = 1 foot? 12 feet1 in. 12 feet 1 in. 1 in. 12 feet 1 in. 12 feet 1 foot12 in. 1 foot 12 in. 1 foot1 in. 1 foot 1 in.