What is the difference between a light-year and an astronomical unit?

What does coal produce during its combustion?

Ben and Jerry added small pieces of magnesium to hydrochloride acid. They noticed that bubbles formed, the test tube got hot, and the the magnesium disappeared. What is a sign that a chemical reaction has taken place in this experiment

Drawing a conclusion derived from knowledge of an established principle is called deductive reasoning. True or false?

Robert leaves a chocolate bar in his car while attending school all day. When he goes to his car in the afternoon, the bar has changed into a gooey liquid. Which statement BEST explains what happened to Robert's chocolate bar?

How do animal participate in the carbon and oxygen cycle?

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.