Which of the following is a property of an acid?
1. Acids become slippery when dissolved in water.
2. Acids react with metals to form hydrogen gas.
3. Acids produce salts when mixed with other acids.
4. Acids become more acidic when mixed with a base.

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

To find the enthalpy of a reaction in the lab, you measured the of the reactants and the change during the reaction.

If a gas has an initial pressure of 101kpa and a volume of 10l, then it expands to a volume of 20l, what is the new pressure?