A (a) is a pure substance that cant be broken down into simpler substances by chemical or physical means

a) element

b) mineral

c) chemical

d) atom

A sample of nitric acid contains both H3O ions and NO3 ions. This sample has a pH value of 1. Write a name of the positive ion present in this sample.

Which element has an atom with the greatest for electrons in a chemical bond? 1) As 2) N 3) Bi 4) P

Which statement best describes John Dalton's use of creativity in his work?

If, as a pioneer, you wished to warm your room by taking an object heated on top of a pot-bellied stove to it, which of the following 15-pound objects, each heated to 100°C, would be the best choice?

Which solid will be more soluble in water, the one with the larger lattice energy or the one with the smaller lattice energy? assume that solute-solvent interactions are the same for both solids?

How many liters of water are required to dissolve 1.00 g of barium chromate? express your answer in liters to three significant figures?

Cartography is the science of

If a sample of gas occupies 400 ml at a pressure of 800 mm Hg, what will be it's volume if the pressure is reduced to 700 mm Hg

Why are water storage tanks usually built on towers or hilltops?

What is convection cell