Exam 1: Matter and Measurements

Element Z has the following properties: A.noncombustible B.unreactive C.colorless,odorless gas at room temperature D.nonconductor of electricity Element Z can be classified as a ________ and will be found ________ the zigzag line of the periodic table.

In which of the following numbers are all of the zeros not significant?

What element is represented by the chemical symbol K?

The formula for ammonia,NH₃,represents a compound composed of

A sample of an experimental medication was calculated to contain 0.392 g of active drug.How many milligrams is this?

Which factor determines the state of matter in which a substance exists?

An object weighs 37.4 kg.What does the object weigh in the English system? 1 lb = 453.6 g

How many grams are contained in 1.20 pounds?

Xylene,a compound with the formula C₈H₁₀,is composed of

Is 25 kilometers per liter good gas mileage for a VW Rabbit diesel? Hint: How do we measure mileage in the English system?

Which of the following measurements has three significant figures?

Vegetable oil is a(an)________,and is found in the ________ phase.

The amount of matter in an object is its

What is the specific gravity of a liquid sample with a mass of 35.0 g and a volume of 14.00 mL?

Find the difference between two masses measured as 123.6 grams and 115.972 grams.Express the answer to the correct number of significant figures.

The formula for glucose,C₆H₁₂O₆,represents a compound composed of

What temperature is 75°F on the Kelvin scale?

Which statement describes a physical change?

Which of the following represents the largest unit?

Which of the following numbers contains four significant figures?