What is the outcome of all chemical changes when two substances are combined?

What did rutherford contribute to the model of the atom? a. the neutron b. the proton c. the nucleus d. the electron

Which two elements have the most similar chemical properties

What do the quantities "atomic number" and "mass number" represent?

Rank the following from smallest to largest in size: C, C+4, C-4

What can be done in the future to use solar energy more often?

20 Which statement describes a reversible reaction at equilibrium? (1) The activation energy of the forward reaction must equal the activation energy of the reverse reaction.

Count the total number of atoms in CaCO3: 2 3 4 5 6

Question #21TrueFalse The general name for a substance added to a reaction that affects the rate but is not consumed in the reaction is called a complex a. True b. False

what kinda energy is produced when a force causes a substance to vibrate, and the energy is transferred through the substance in a wave.

What is similar to iodine by chemical characteristics