How would you figure the number of protons or electrons in an atom

Explain why water is considered to be the best solvent in the world.

A hydrocarbon with this formula c5h10: has a triple paired c-c bond has a double paired c-c bond is essentially inert is unstable and extremely reactive

Potassium atoms contribute one eletron to metallic bonding, but calcium atoms contribute two eletrons. Explain which metal is likely to be harder

The primary difference between a scientific theory and a hypothesis is that a theory is

What organisms can be infected by Ebola

A piece of glass with a mass of 32.50 g specific heat of 0.840 J/g*°C and an initial temperature of 115 °C was dropped into a calorimeter containing 57 g of water (specific heat 4.184 J/g*°C).

Which of the following is the most likely description of the product or products of a double-displacement reaction? A) one new compound B) two new compounds C) oxygen and energy D) one new compound and an element

A balloon is filled with 12L of air at a pressure of 2 atm. What is the volume of ballon if the pressure is changed to 3 atm?

What ionic bond occurs between what particles? A. Two Negative Ions B. A positive and negative ion C. Two positive ions D. Two neutral atoms

Which of the following are good traits of a hypothesis? it will be able to be tested it can predict an outcome it will explain the observations all of these