16 Questions
What is the term for the number of protons in the nucleus of an atom?
Atomic Number
What type of bond is formed by the transfer of electrons?
Ionic bond
What is the result of a chemical change?
The formation of a new product
What is the term for a substance that cannot be further broken down into simpler substances?
Element
What is the purpose of a chemical equation?
To represent a chemical reaction in a concise manner
What is the term for a change in which no new product is formed?
Physical change
What is the sum of the number of protons and neutrons in the nucleus of an atom?
Mass Number
What is an example of a compound?
Water
What is the primary difference between an atomic number and a mass number?
The atomic number represents the number of protons, while the mass number represents the sum of protons and neutrons.
What is the primary characteristic of an ionic bond?
It is a bond formed by the transfer of electrons.
What is the primary purpose of a chemical equation?
To describe the chemical changes in a reaction.
What is the primary characteristic of a compound?
It is a combination of two or more elements in a definite ratio by weight.
What is the primary difference between a physical change and a chemical change?
A physical change is reversible, while a chemical change is irreversible.
What is the primary type of bond that is formed between two non-metal atoms?
Covalent bond
What is the primary characteristic of an element?
It is a substance that cannot be further broken down into simpler substances.
What is the primary purpose of a subscript in a chemical symbol?
To indicate the atomic number of an element.
Study Notes
Atomic Structure
- An atom consists of three fundamental particles: electron, proton, and neutron
- Electron: negatively charged, moves around the nucleus in shells
- Proton: positively charged, present in the nucleus
- Neutron: neutral, present in the nucleus
Atomic Number and Mass Number
- Atomic Number (Z): number of protons in the nucleus or number of electrons in orbit
- Atomic Number is written as a subscript on the left side of the chemical symbol (e.g., 6C, 7N)
- Mass Number (A): sum of number of neutrons and protons in the nucleus
Types of Changes
- Physical Change: temporary and reversible change, no new product formed (e.g., butter melting on warm toast)
- Chemical Change: irreversible change, resulting in at least one new product formed
Substances
- Compound: formed when two or more elements combine in a definite ratio by weight (e.g., H2O)
- Mixture: formed when two or more substances combine in a definite ratio by weight (e.g., air)
- Element: a substance that cannot be further broken down (e.g., H, O)
Chemical Equations
- A shorthand method of describing a chemical reaction using symbols
- Example: Zn + H2SO4 → ZnSO4 + H2
Chemical Bonding
- Three types of chemical bonds: ionic, covalent, and coordinate covalent
- Ionic Bonding: formed by the transfer of electrons
Atomic Structure
- An atom consists of three fundamental particles: electron, proton, and neutron
- Electron: negatively charged, moves around the nucleus in shells
- Proton: positively charged, present in the nucleus
- Neutron: neutral, present in the nucleus
Atomic Number and Mass Number
- Atomic Number (Z): number of protons in the nucleus or number of electrons in orbit
- Atomic Number is written as a subscript on the left side of the chemical symbol (e.g., 6C, 7N)
- Mass Number (A): sum of number of neutrons and protons in the nucleus
Types of Changes
- Physical Change: temporary and reversible change, no new product formed (e.g., butter melting on warm toast)
- Chemical Change: irreversible change, resulting in at least one new product formed
Substances
- Compound: formed when two or more elements combine in a definite ratio by weight (e.g., H2O)
- Mixture: formed when two or more substances combine in a definite ratio by weight (e.g., air)
- Element: a substance that cannot be further broken down (e.g., H, O)
Chemical Equations
- A shorthand method of describing a chemical reaction using symbols
- Example: Zn + H2SO4 → ZnSO4 + H2
Chemical Bonding
- Three types of chemical bonds: ionic, covalent, and coordinate covalent
- Ionic Bonding: formed by the transfer of electrons
This quiz covers the basics of atomic structure, including the three fundamental particles of an atom: electrons, protons, and neutrons, as well as the concept of atomic number.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
