Name 5 metals used to make the penny over the years.

What are the fundamental particles in Calcium Chloride?

The bottom number on each element on the Periodic Table is called

A lead ball has a mass of 55.0 grams and a density of 11.4 g/cm3. What is the volume of the ball? A) 0.207 mL B) 0.207 L C) 4.82 mL D) 4.82 L E) none of the above

How much heat, in calories, is given off when 1.25 grams of silver is cooled from 100.0 degrees Celsius to 80 degrees Celsius? (The specific heat of silver is 0.057 cal/g degrees Celsius)

Which air mass forms mostly over central Canada?

A 1-cubic-centimeter cube of sodium reacts more rapidly in water at 25°C than does a 1-cubic-centimeter cube of calcium at 25°C.

Calculate the voltage if the current is 0.5 A and the resistance is 2.0 Ω.

Moseley's changes to the periodic table were based mainly on what part of the scientific process

Which of the following precautions is important when using a Bunsen burner or Meker burner? a. Set up your work space so that wires and cables cannot accidentally make contact with the flame or hot glassware and meltb.

What explains the fact that no machine is 100 percent efficient? A. Friction transforms mechanical energy into thermal energy. B. Thermal energy is transformed into mechanical energy by friction. C.