Why shouldn't you look at burning magnesium ribbon?

Do gases have mass and weight?

When an atom undergoes alpha decay

Which of the following examples is a compound containing an ionic bond? A. O2 B. H2O C. CaO D. CH4

If a sample of copper with a density of 8.90 g/cm3 has a mass of 798 g, what is its volume? 89.7 mL 0.0111 mL 7.10 x 103 mL

Most of the elements of which region of the periodic table are located directly to the right of the metaloids? A. Metals B. Nonmetals C. Noble Gases

Which element has an ion that is smaller than an ion of calcium?

Which factor is responsible for the weak attraction between diatomic molecules of the halogens (group 7A) ? A) Hydrogen bonding B) Ionic bonding C) Dipole interactions D) London dispersion forces

Which is the correct equation for refractive index?

Alcl3) and lithium sulfate (li2so4) (note - this is a double replacement reaction. you need this information to predict the products of the reaction)

Which type of bond is present in hydrogen sulfide (H2S) ? The table of electronegativities is given.