Who introduces the concept of atomic number?

Which TWO of the elements listed below would most like form a covalent bond? Oxygen Hydrogen Carbon Magnesium

What is the volume of a box that is 8 cm high, 12 cm wide and 4 cm long?

How many atoms are present in 3588.3 amu of Al?

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

Select the correct numerical form of this number written in scientific notation. 6.2 * 10^5

A peregrine falcon can travel 537,600 furlong/fortnight. A race car travels 212ft/s. A spider can jump with a maximum velocity of 9,000,000 cm/hr. Which travels the fastest?

how many energy levels (shells) does an atom of oxygen have? How do you know this by looking at the periodic table?

A student needs to use 0.575 moles of sodium chloride in an experiment. How many grams should he mass out?

Which of the following seperation methods is used to seperate plant pigments? Filtration, Chromatography, fractional distillation, simple distillation?

If a fast moving car making a loud noise approaches and moves past the person what will happen as the distance between the two increases?