شبکه واژگان: 化学

In a scientific context, it refers to a 'molecule,' the smallest unit of a chemical compound. In mathematics, it refers to the 'numerator,' the top number in a fraction.

An atom is the basic building block of all matter and the smallest unit of a chemical element. It consists of a dense central nucleus surrounded by a cloud of negatively charged electrons.

A chemical element, which is a fundamental substance that cannot be broken down into simpler substances by chemical means. It refers to the basic building blocks of matter listed on the periodic table.

A test or trial carried out to discover something unknown, verify a hypothesis, or demonstrate a fact. It can refer to scientific procedures in a lab or trying out a new idea in daily life to see the outcome.