Which of the following activities is not a part of good science?

The distance between carbon atoms in ethylene is 134 picometers. Which of the following expresses that distance in meters?

Which of the following represents the largest volume?

The speed needed to escape the pull of Earth's gravity is 11.3 km/s. What is this speed in mi/h?

Which of the following is not an S.I. base unit?

Which of the following is an extensive property of oxygen?

Isopropyl alcohol, commonly known as rubbing alcohol, boils at 82.4 ^oC. What is the boiling point in kelvins?

Which measurement is expressed to 4 significant figures?

Select the answer with the correct number of decimal places for the following sum:

13.914 cm + 243.1 cm + 12.00460 cm =

The difference between a student's experimental measurement of the density of sodium chloride and the mnown density of this compound reflects the _____ of the student's result.

Kaolinite, a clay mineral with the formula Al₄Si₄O₁₀(OH)₈, is used as a filler in slick-paper for magazines as a raw material for ceramics. Analysis shows that 14.35 g of kaolinite contains 8.009 g of oxygen. Calculate the mass percent of oxygen in kaolinite.

Who was credited with first measuring the charge of the electron?

The chemical symbol for potassium is

In the modern periodic table, the order in which the elements are placed is based on

Which of the following is a non-metal?

A row in the periodic table is called a

After an atom has lost an electron it becomes a/an_____ and has a _____ charge.

Which of the following compounds is covalent?

What is the name of Na₂O?

Which of the following is a polyatomic cation?

Calcium hydroxide is used in mortar, plaster, and cement. What is its formula?

What is the name of IF₇?

Ammonium sulfate, (NH₄)₂SO₄, is a fertilizer widely used as a source of nitrogen. Calculate its molar mass.

Sodium chromate is used to protect iron from corrosion and rusting. Determine its molecular mass.