Chemistry Chapter 2 Flashcards

Questions and Answers

What is an element?

A type of compound

A substance that cannot be broken down into simpler substances by chemical or physical means (correct)

A mixture of different substances

A substance that can be broken down

What kinds of particles make up atoms?

Protons, neutrons, and electrons

What are isotopes?

Atoms with the same number of protons but different numbers of neutrons

What are compounds and why do they form?

A substance that consists of two or more elements that are chemically combined in specific proportions. Signup and view all the answers

What are ionic bonds?

Bonds formed between positive and negative ions Signup and view all the answers

What are covalent bonds?

Bonds formed when atoms share electrons Signup and view all the answers

What are metallic bonds?

Bonds formed when electrons are shared by metal ions Signup and view all the answers

Name the three types of particles in an atom and explain how they differ.

Electrons, neutrons, and protons; protons are dense particles with positive charges, neutrons are dense particles with no charge, and electrons are small particles with negative charges. Signup and view all the answers

Study Notes

Elements

Defined as substances that cannot be broken down into simpler substances by chemical or physical means.

Atomic Structure

Atoms consist of a nucleus composed of protons and neutrons.
Electrons orbit around the nucleus, completing the atomic structure.

Isotopes

Isotopes are variations of atoms that contain the same number of protons but differ in the number of neutrons.

Compounds

Compounds consist of two or more elements that are chemically combined in specific proportions.
Formation of compounds occurs when atoms achieve greater stability.

Ionic Bonds

Ionic bonds result from the electrostatic attraction between positively and negatively charged ions.

Covalent Bonds

Covalent bonds are formed when atoms share electrons, creating a stable electron arrangement.

Metallic Bonds

Metallic bonds involve the sharing of electrons among metal ions, allowing for conductivity and malleability.

Atomic Particles

The three primary particles in an atom are:
- Protons: Dense particles with a positive charge.
- Neutrons: Equal in density to protons but carry no charge.
- Electrons: Small particles with a negative charge, located in orbitals around the nucleus.

Description

Discover essential concepts in chemistry with this flashcard quiz focused on Chapter 2. Learn about elements, atomic structures, and isotopes through definitions and examples. Perfect for reinforcing your understanding of basic chemical principles.