Help please Most metallic elements have all of theses properties EXPECT.

•a high melting point
• being a good conductor of electricity
•being easily crumble into pieces
•a shinny luster

Particle model to predict what will happen if a sharp object creates a hole in the soccer ball

Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)

Which statement best explains the relationship between an area is geography and the temperature of its surface water