Introduction to General Chemistry
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Questions and Answers

What is chemistry?

Chemistry is the study of matter or materials, the changes it undergoes, and the energy associated with these changes.

Why is it important to study chemistry?

It is important to study chemistry because it helps us understand the composition, properties, and behavior of matter, which is essential for various fields such as medicine, industry, and environmental science.

Define 'matter'

Matter refers to anything that has mass and takes up space. It can exist in the form of solids, liquids, or gases.

Define 'elements'

<p>Elements are pure substances that cannot be broken down into simpler substances by chemical means. They are made up of atoms with the same atomic number.</p> Signup and view all the answers

Define 'atom'

<p>An atom is the basic unit of matter. It consists of a nucleus (containing protons and neutrons) and electrons orbiting around the nucleus.</p> Signup and view all the answers

Chemistry is the study of ______ or materials, the changes it undergoes and the energy associated with these changes

<p>matter</p> Signup and view all the answers

Certain materials (solids, liquids or gases) are made of ______

<p>matter</p> Signup and view all the answers

[Blank] do these materials undergo

<p>changes</p> Signup and view all the answers

The number of ______, neutrons and electrons can be identified in given elements of the periodic table

<p>protons</p> Signup and view all the answers

The ______ atomic mass of given elements can be calculated

<p>relative</p> Signup and view all the answers

Chemistry is the study of ______ or materials, the changes it undergoes and the energy associated with these changes

<p>matter</p> Signup and view all the answers

Certain materials (solids, liquids or gases) are made of ______

<p>atoms</p> Signup and view all the answers

The types of changes (reactions) that these materials undergo are called ______

<p>chemical</p> Signup and view all the answers

In chemistry, the ______ of an element is the number of protons in the nucleus of an atom

<p>atomic number</p> Signup and view all the answers

The ______ of an element is the total number of protons and neutrons in the nucleus of an atom

<p>mass number</p> Signup and view all the answers

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