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Chapter 1: Problem 1

Write a one-sentence definition for each of the following: a. chemistry b. chemical

Short Answer

Expert verified
Chemistry studies matter and its changes, while a chemical is a substance involved in these processes.

Step by step solution

01

Define Chemistry

Chemistry is the branch of science that studies the composition, structure, properties, and changes of matter.
02

Define Chemical

A chemical is a substance with a distinct molecular composition that is produced by or used in a chemical process.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Chemistry
Chemistry is the branch of science that explores everything about matter. It's all about how different substances combine and interact.
Chemistry looks at the composition, which is what something is made of.
It also studies the structure, detailing how the particles are arranged.
Additionally, chemistry examines properties, the characteristics that allow us to identify substances.
Finally, chemistry looks at how matter changes, whether through physical change like melting ice, or chemical change like rust forming on iron.
Chemical
A chemical is any substance with a specific molecular makeup.
Everything around us is made of chemicals, from the air we breathe to the water we drink.
Chemicals can be produced naturally, like the oxygen generated by plants, or synthetically, like the plastic used to make bottles.
They play essential roles in various chemical processes that occur in nature and industry.
Understanding chemicals and their interactions helps us develop new materials and technologies.
Matter Properties
Properties of matter are characteristics used to identify and describe substances.
They can be categorized into physical properties, like color, odor, density, and melting point, and chemical properties, like reactivity and flammability.
Physical properties can be observed without changing the substance, while chemical properties can be observed only during a chemical reaction.
By studying these properties, scientists can predict how substances will behave under different conditions.
Molecular Composition
Molecular composition refers to the types and arrangements of atoms in a molecule.
Molecules are made from atoms bonded together in specific ways.
The makeup of a molecule determines its properties and how it interacts with other substances.
For example, water has a molecular composition of two hydrogen atoms and one oxygen atom (H鈧侽).
This composition gives water its unique properties, like its ability to dissolve many substances.
Chemical Processes
Chemical processes are the steps through which substances undergo chemical changes.
These processes involve breaking and forming bonds between atoms to create new substances.
Examples include photosynthesis in plants, burning fuel in cars, and cooking food.
Chemical processes are essential in both nature and industry, driving everything from cellular respiration to manufacturing medicines.
Understanding these processes allows scientists to develop new ways to use materials and energy more effectively.

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Most popular questions from this chapter

Select the correct phrase(s) to complete the following statement: A hypothesis is confirmed when: (1.2) a. one experiment proves the hypothesis b. many experiments validate the hypothesis c. you think your hypothesis is correct

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