Which of the following is NOT a chemical reaction?

1. Fireworks exploding

2. Baking a cake

3. Shattering glass with baseball

4. Lighting a match

What kind of charge does a cation have

An electron has a charge of A. - 1 and the same mass as a proton B. + 1 and the same mass as a proton C. - 1 and a smaller mass than a proton D. + 1 and a smaller mass than a proton

Lead has a density of 11.3 grams/cm cubed. What mass of lead will fit in a 20 cm cubed container?

What choice has the same volume as of gas? 1) the atmosphere 2) it's container 3) it's molecules 4) it's atoms

Convert 2.5 grams of water to molecules of water.

What is the momentum of an 800-kg car | traveling at a velocity of 10 m/s? What is its momentum if it speeds up to 50 m/s?

How many grams of CuSO4 are there in 100.0 g of hydrate? How many moles?

Which student is determining the atomic mass of sodium?

Ionic compounds can conduct electricity when dissolved in water or melted, because a. the ions are free to move. b. they have no ions to contribute to the solution. c. the ions are fixed in place. d. they have shared electrons.

What does the number next to the ion signify?