A direct relationship occurs when:

two variables increase at the same time

two variables decrease at the same time

one variable increases as another variable decreases

xy=k

select all that apply

What is the Lewis dot structure for potassium sulfide?

Which represent potential energy? A. A candy bar B. A stretched rubber band C. Wind D. A roller coaster at the top of a hill E. Rowing a boat F. A ball rolling down a hill

Alchemy contributed to the development of chemistry. True or False?

In terms of electrons, what happens when sodium oxide is formed?

The metal is observed to begin to melt when the temperature of its container is approximately 29°C. The metal is most likely

Sunlight produces a spectrum of colors that includes what?

Which of the following is not a common use of gypsum? a. wallboard/drywall for homes b. a primary ingredient for toothpaste c. surgical splints and casts d. pH reducing agent for acidic soils

In which of the following are the symbol and name for the ion given correctly A. NH4+: ammonia; H+: hydride B. C2H3O2-: acetate; C2O4-: oxalite C. OH-: hydroxide; O2-: oxide D. PO3 3-: phosphate; PO4 3-: phosphite

If you add a large piece of zinc to a beaker of acid and, in a separate beaker, zinc shavings to a beaker of acid (of equal concentration/volume), the sample with the zinc shavings will react faster than the sample with the large piece.

How many atoms of oxygen are in 0.100 miles of silicon dioxide, SiO^2