Intro to college chemistry Quiz 01

Chemistry is the study of ?

Matter and energy.

Energy is defined as?

The capacity or power to do work.

If you break matter down, it will be comprised of one or more of the?

Chemical elements on the periodic table.

Around 1774, who disproved the Phlogiston Theory in France, proving the existence of oxygen?

Antoine Lavoisier and Ann-Marie Lavoisier.

Which nation of people discovered rubber balls over 3,000 years ago using latex from rubber trees (the castilla elastica) and the morning glory?

Mesoamericans

Who discovered phosphorus in 1669?

Henning Brand

Who is the Frenchman in the 14th Century that became famous in his search for the “philosopher’s stone.” J.K. Rowling included him as a wizard in book 1 of the Harry Potter series.

Nicholas Flamel

Which of the following is not a step in the Scientific Method?

Observe and question

Research

Test your hypothesis

Make a guess even if it can’t be tested

Formulate and hypothesis

Make a guess even if it can’t be tested.

How would you classify a molecule of water that is made up of 2 atoms of hydrogen and one atom of oxygen?

Particulate matter.

Which state of matter has the highest density?

Solid

Which state of matter do not hold their own shape and can fill a container of any shape or size. This state of matter also has very high movement of its atoms and/or molecules.

Gas

The temperature value for the boiling point is the same temperature value for the?

For example, 100 degrees C is the boiling point for water. 100 degrees C is also the?

Condensation point.

What is the occasional occurrence when a gas turns directly into a solid without turning into a liquid first.

Deposition

Sublimation

Freezing

Condensation

Melting

Deposition.

Is it possible to freeze water without seeing a change in temperature?

Yes

Color, density, freezing point, and smell are all?

Chemical properties

Physical properties

Physical properties.

What describes how a substance interacts with other substance in a chemical reaction.

Physical properties

Chemical properties

Chemical properties.

Which of the following elements is a solid at room temperature?

Bromine

Neon

Mercury

Sodium

Chlorine

Sodium

Which of the following is a chemical property of iron?

Just like copper, iron will change color when it reacts with oxygen, forming iron (III) oxide.

Which of the following is a physical change?

Exploding

Oxidizing

Fermenting

Corroding

Filtering

Filtering

Which of the following is a physical change for the compound sucrose (sugar)?

Burning sucrose

Freezing ethanol at - 114.1 degrees C

Decomposing sucrose into carbona and water

Dissolving sucrose in water

Dissolving sucrose in water