What is a scientific explanation that can be tested?

Although some substances we encounter in our routine lives are elements, most occur in the combined state

Which statement is true according to dalton s theory? a. atoms of different elements can join to form larger atoms. b. atoms can be subdivided into smaller particles. c. atoms of the same element differ in electric charge. d.

What would happen if the cell wall in a plant cell just broke like all of them at the same time would it change the color or will it grow faster or will it die what will hapen

When two aqueous solutions are mixed together the temperature of the solution decreases?

The net charge on a sulfide ion (s2-) is - 2. explain how this ion obtains its charge

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