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atom - A basic unit of matter that cannot be broken down by normal chemical reactions., molecule - Two or more atoms bonded together. These come together to form the parts of many living and non-living things., macromolecule - A very large molecule composed of many atoms. Examples include proteins, fats (lipids), carbohydrates, and nucleic acids., proton - A subatomic particle that has a positive charge and that is found in the nucleus of an atom., electron - A subatomic particle that has a negative charge and orbits the nucleus of an atom., neutron - A subatomic particle that has no charge and that is found in the nucleus of an atom., subatomic - Smaller than an atom., chemical symbol - One or two letters that represent an element., chemical formula - A combination of chemical symbols and numbers to represent a substance., element - A pure substance made of only one kind of atom. Cannot be broken down into a simpler substance., Periodic Table of Elements - The chart scientists use to organize and classify all the known elements., energy - Not made of matter. Includes heat, light, and sound., matter - Anything that has mass and takes up space., states of matter - Solid, liquid, gas and plasma. (Plasma is a "soup" of disassociated nuclei and electrons, normally found only in stellar objects), solid - A state of matter that has a definite shape and a definite volume., liquid - A state of matter that has a definite volume but no definite shape., gas - A state of matter with no definite shape or volume.,

2025 Basics of Matter Vocabulary

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