Atoms and Molecules

Front

What is an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element. It consists of a nucleus made of protons and neutrons, surrounded by electrons.

Front

What is a molecule?

Back

A molecule is a group of two or more atoms bonded together, representing the smallest fundamental unit of a chemical compound.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of only one type of atom, while a compound is a substance formed when two or more different types of atoms bond together.

Front

What is a chemical equation?

Back

A chemical equation is a symbolic representation of a chemical reaction, showing the reactants and products along with their coefficients.

Front

What does it mean to balance a chemical equation?

Back

Balancing a chemical equation means ensuring that the number of atoms of each element is the same on both sides of the equation.

Front

What is conductivity?

Back

Conductivity is the ability of a material to conduct heat or electricity. Materials with high conductivity allow energy to pass through easily.

Front

What is an ionic compound?

Back

An ionic compound is a chemical compound formed by the electrostatic attraction between oppositely charged ions, typically formed between metals and nonmetals.

Front

What is a polar covalent bond?

Back

A polar covalent bond is a type of chemical bond where electrons are shared unequally between two atoms, resulting in a molecule with a slight electrical dipole moment.

Front

What is a nonpolar covalent bond?

Back

A nonpolar covalent bond is a type of chemical bond where electrons are shared equally between two atoms, resulting in no charge separation.

Front

What is the significance of hydrogen in organic compounds?

Back

Hydrogen is often the most abundant element in organic compounds, playing a crucial role in their structure and reactivity.