Questions

Heat always flows from a body at higher temperature to a body at a lower temperature.

The simplest form of matter that has a unique set of properties and is cannot be broken down into simpler substances by chemical means is called an Element.

An Atom is the simplest form of an element.

The simplest form of some elements is a Molecule. When an element consists of two identical atoms it is called a diatomic molecule.

A substance that contains two or more elements chemically combined in a fixed proportion is called a Compound.

A small organic molecule (sugars or amino acids), several of which may be bonded together to form a chain called a polymer.