Is it easier to identify an unknown metal by such as physical properties as colour, lustre, mass, and volume, or by characteristic physical property such as density? Explain your answer.

The most active of all the chemical elements is a halogen known as?

H2O goes to H3O + is it a bronsted-Lowry acid or base?

Calculate the molar mass of ammonium carbonate. a. 88.05 g/mol b. 78.05 g/mol c. 96.09 g/mol d. 112.09 g/mol e. none of the above

If 20. g of a radioactive isotope are present at 1:00 pm and 5.0g remain at 2:00 pm, what is the half life of the isotope?

Why are noble metals for example Rhodium, Palladium, Platinum, and Iridium largely used in chemical manufacturing as heterogeneous catalyst?

What larger energy does light energy come from?

Allows water to pass through easily

Which is a cause of desertification? A. farming B. creating reservoirs C. overgrazing D. driving motor vehicles

What happens when the threat of exposure to dirty air is reduced in a community? There is enough oxygen available for people's lungs to function normally The amount of indoor air pollutants released during a fossil fuel burn decreases There is a

Is chicken noodle soup an element, a compound, a homogeneous mixture, or a heterogeneous mixture?