1.1 Chemistry and Chemicals

Which of the following facts about anaerobic respiration is most related to chemistry?

Anaerobic respiration is where glucose is converted to lactic acid and energy is released. Oxygen is not used in the process.

Explain why chemistry is sometimes called "The Central Science"

Chemistry is highly interconnected with so many other scientific disciplines.

How are organic light emitting diodes (OLEDs), used in many modern displays, related to chemistry?

OLEDs use new materials that were developed using chemistry.

Of the following facts about rust, which is the fact most related to chemistry?

Rust is a red oxide formed by a redox reaction of iron and oxygen in the presence of moisture.

Many metals rust when exposed to a source of oxygen like air or water. Why does rusting fall under the study of chemistry?

Rusting is an example of an interaction of matter.

Chemistry often involves working with chemical reactions, like the one shown below, which describes the decomposition of carbonic acid when a soda can is opened. What does this equation mean? H2CO3(aq)→H2O(l)+CO2(g)

The carbonic acid, H2CO3, changes into water, H2O, and carbon dioxide, CO2.

Why is chemistry helpful in understanding how a toaster creates the brown color and crispy texture of toast?

The composition and/or properties of the surface of the toast are somehow changed by the toaster.

In the study of chemistry, you will learn about the ideal gas law, which relates pressure, temperature, and volume for gases. What is the best reason why the ideal gas law is studied in chemistry?

The ideal gas law explains how the properties of gases change.

Which of the following statements is/are example(s) of something that could be explained using chemistry?

The ripening of an apple ripens other apples. A piece of cut potato turns brown when left out on the cutting board.

Why is chemistry helpful for understanding why tea smells good?

The smell is a result of the release of compounds from the leaves. The process is described by multiple interactions between the water and the compounds in the leaves, which is an example of chemistry.

Which of the following questions is the best example of a question that could be answered or explained by studying chemistry?

What is graphene and how it is made?

Of the following facts about digestion, which is the fact most related to chemistry?

When it is activated in the stomach, the enzyme pepsin breaks down proteins by cleaving some of the peptide bonds.

Identify the statement that is related to chemistry.

When we cut onions, we cry. We should use light-colored clothes in summer and dark clothes in winter.

Which of the following questions is most directly answered by using chemistry?

Why do apples slices turn brown?

In geology, we study the atoms that make up stone and soil, which determine the hardness, erosion, and physical qualities of the landscape. What science is used to understand the composition of these stones?

chemistry

Which of the following is not reliant on an understanding of chemistry?

none of the above. Geology, biotechnology, and agriculture all rely on chemistry in their study and application.

Joanne wants to study chemical interactions. In which of the following places can she look? Select all that apply.

refining crude oil the making of plastic baking a cake dyeing of hair

What concept from chemistry primarily describes why oil and water do not mix?

solubility

Which of the following are aspects of the study of chemistry? Select all that apply.

the properties of matter the interactions of matter the composition of matter