Which family on the periodic table contains elements that already have the octet in their valence energy level? a:family 1 b:family 13 c:family 15 d:family 18?

Which chemical property of matter describes how well things burn?

What is the number of valence electrons that most atoms prefer?

Nitrogen (N) has an atomic number of 7 and an atomic mass of 14. Which of the following correctly shows the electron arrangement for nitrogen? A. 2, 7 B. 2, 5 C. 2, 2, 3 D. 2, 8, 4

What is the the atomic mass of carbon-14 A.) 6 amu B.) 12 amu C.) 14 amu D.) 2 amu

When the volume changes from 63.5 mL to 69.2 mL, what is the final pressure if the initial pressure was 735 mmHg pressure? law used?

A base a. causes phenolphthalein indicator to change from colorless to pink. b. donates a proton in a proton transfer reaction. c. accepts electrons in an electron transfer reaction. d. produces hydrogen ions in solution. e. does none of the above.

Which of these is an indicator that a chemical reaction has occurred? precipitate forms temperature remains the same color is diluted mass increases

The half-life of isotope X is 3 days, how long will it take for one half of 10g sample to decay

A 69.1-g sample of h2o contains how many molecules of water?

Why is ac used instead of dc