What is matter?

A. Anything that has mass and takes up space

B. Something that has volume and takes up space.

C. Things that have energy and take up space

D. Things that take up space but don't have mass

The chemical reaction 2 H2O + energy → 2 H2 + O2 is 1. a synthesis reaction. 2. an endothermic reaction. 3. an exothermic reaction. 4. an ionic reaction.

A sulfur atom and a sulfur molecule are not identical. what is the difference?

Which is not an essential component of a voltaic cell? A. Negative electrode (anode) B. Positive electrode (cathode) C. Electrolyte D. Voltmeter

A baseball player hits a ball. Which is the best description of the energy of the ball as it flies over the pitcher's head? a. chemical b. mechanical c. kinetic d. thermal

In the formula for barium chloride barium is written first because it is

Suppose that you have 23 g of silver. Also assume that this sample of silver is initially at 18 oC. What is the final temperature of this sample of silver after it absorbs 2.05 kJ of heat? csilver = 0.

The number of neutrons in the nucleus of an atom can be determined by (1) adding the atomic number to the mass number (2) subtracting the atomic number from the mass number (3) adding the mass number to the atomic mass (4) subtracting the mass

Trisha and her lab partner filled a beaker with 150 milliliters of a 0.10 M HCl solution. How many moles of HCl are in the beaker? Remember, molarity = moles liter.

Why is the correct name of compound Silicon Pentoxide and NOT Silicon Pentoxide?

10. The density of aluminum is 2.7 g/cm². A 27g piece of aluminum will have what volume?