If you add ice to a glass of room-temperature water, does the water warm the ice or

does the ice cool the water? Explain.

How do the number of protons change as atomic number increases by one

M) The chemical formula of sodium carbonate is Na2CO3- Sate how many carbon atoms are present in the formula

What property of metals allows them to be shaped into wires?

What is hydrogen gas

A single atom of oxygen cannot be subdivided into simpler substances by any physical or chemical means. Therefore, it is:

Assuming that air contains 78 percent N2, 21 percent O2 and 1 percent Ar, all by volume. How many molecules of each type of gas are present in 1.0 L of air at STP?

Two children are playing tag. Child A who is doing the chasing can run 100m in 24 seconds Child B is running away from child A and can run 64m in 21 seconds.

What ion does a base increase

What is the definition of Amplitude?

An excess of NiCO3, 12 g, was added to 40cm cube of sulpheric acid, 2.0 mol/dm cube. The unreacted nickel carbonate was filtered out and the filtrate evaporated to optain the crystals.