If you examine a rock sample and observe fossils in it, what type of rock does the sample represent?

Describe and explain the trends in reactivity in different groups of the periodic table, using your knowledge of electronic structure. [6 mark]

What causes beads of moisture to form on the outside of a cold drinking glass? A. Water vapor in the air gains thermal energy from the cold glass surface. B. Water vapor in the air condenses into a liquid on the cold glass surface. C.

The difference between relative abundance and percentage abundance

What kind of ocean ecosystem did the author of this text ask questions about

Would fluorine's chemical properties resemble those of oxygen or those of chlorine?

Trisha and her lab partner were conducting a variety of experiments to produce gases: hydrogen, oxygen, and carbon dioxide. In one experiment, they added a piece of magnesium ribbon to 10 milliliters of hydrochloric acid.

what mass of magnesium is required to react with excess nitrogen to produce 0.500 mol magnesium nitrade

Silver chromate is sparingly soluble in aqueous solutions. the ksp of ag2cro4 is 1.12 * 10-12 m3. what is the solubility (in mol/l) of silver chromate

What do you think 1,5-pentanedithiol C5H12S would smell like

If an atom has sp hybridization in a molecule: the maximum number of σ bonds that the atom can form is