What is Mg + O2 - > MgO

Which radioisotope undergoes beta decay and has a half-life of less than 1 minute? (1) Fr-220 (3) N-16 (2) K-42 (4) P-32

The nervous system consists of the brain, spinal cord, and nerves that run throughout the entire body. Which of these is one function of the nervous system?

How are quantum numbers related to atomic orbitals?

Chemical properties a. include changes of state of a substance b. include mass and color c. include changes that alter the identity of a substance d. can be observed without altering the identity of a substance

True or false: a small stone and a large boulder, each of which has a surface temperature of 35 degrees celsius, contain the same amount of heat.

Organic molecules always: A. contain carbon. B. contain carbon, hydrogen, and oxygen respectively in a 1:2:1 ratio. C. are produced by living organisms. D. dissolve in water.

Whats the scientific notation of 0.00000923

A catalyst increases the rate of a chemical reaction by

What energy is changed to cell energy in stage 1 of photosynthesis. true or false

A person produces two sound waves with a flute, one immediately after the other. Both sound waves have the same pitch, but the second one is louder. Which of the following properties is greater for the second sound wave?