Looking at the Bohr models of atoms offer an explanation as to WHY the atomic size changes as it does for both periods and groups.

Periods:

Groups:

If a substance is an arrhenius base, is it necessarily a bronsted lowry acid

What determines an atom's reactivity? A) How many protons the atom contains. B) How many energy levels the atom contains. C) Whether the atom is a metal or a nonmetal. D) How many valence electrons the atom contains.

Trail mix is just that - a mix. Or in science terms, it is a mixture. One way you can tell this is a mixture is that you can A) eat all the parts. B) measure the amounts of the parts. C) separate the parts by their properties.

Where does glycolysis occur?

Why does an ion have an electrical charge?

Two components combine to create a binary ionic compound. Name one of them

True or false. The synthesis of giant molecules from components of repeating units is polymerization.

Which term names an environmental cost of fossil fuel consumption? A. cheap energy B. increased greenhouse gases C. renewable resource D. low pollution

Slowly heating butter in a pan until it changes from a solid to a liquid is an example of a physical change. True False

Action - reaction forces don't cancel each other. A. True B. False