Astronomy is one of the oldest sciences.

True

False

Match the property with the correct type of metal.

Differentiate between Ion, element, atom and molecule.

The small bags of silica gel you often see in a new shoe box are placed there to control humidity. Despite its name, silica gel is a solid. It is a chemically inert, highly porous, amorphous form of SiO2.

How many hydrogen atoms are in 5.70 mol of ammonium sulfide?

MgCl2 + NH4NO3 - -> Mg NO3 + NH4Cl is this a double replacement reaction?

The table below shows the shapes of two samples, C and D, when placed in three containers of different shapes.

How many grams of KCl are produced when 60 grams of K are reacted?

Whats a solution! people

How do compounds affect an atom's stability

You need to make 10 mL of 2 mg/ml solution of protein and you have 25 mg/mL solution. How much protein solution and water do you need to mix in order to make the required solution?