1.) How many periods are on the periodic table? Are periods the columns or the rows on the periodic table?

Explain oxidation and reduction occur simultaneously

After researching the possible effects of music, Elaina proposes that if people listen to faster-paced music, their pulse rates will increase more than if they listen to slower music.

Rob measures the solubility of three different salts in water at 22°C. Which type of graph should he use to display his data? bar graph line graph histogram scatterplot

What is the chemical process of breaking down food and realeasing energy?

Which best describes nuclear fission? A. the burning of carbon B. the decay of radioactive isotopes C. the splitting apart of atomic nuclei D. the release of a tiny packet of energy

Which of the following statements is true? A. Particles of a solid have a very orderly, three dimensional arrangement and do not move B. Particles of a liquid change shape and volume C.

How does hess's law use intermediate reactions to calculate the enthalpy of a desired reaction?

Which atomic particle dtermines the chemical behaviour of an atom?

If you could travel to the Sun and back, about how far would you travel? A. 1 AU B. 2 AU C. 5 AU D. 10 AU

A scientist is conducting a descriptive experiment where she is monitoring sea level along coastal towns in California. What is a major benefit of this experiment? The relationship shows cause and effect. It is repeatable.