Unit 1 Vocab

the smallest particle of an element

• Molecule

• Atom

• Element

• Chemical

refers to the simplest unit of a chemical compound that can exist; formed when two or more atoms combine chemically

• Molecule

• Compound

• Atom

• Element

Tags

NGSS.MS-PS1-1

composed of two or more different elements that are chemically combined

• Molecule

• Element

• Compound

• Atom

represents the type and number of atoms present in a particular substance

• Chemical Formula

• Symbol

• Atom

• Compound

Tags

NGSS.MS-PS1-1

one or two letters representing a chemical element

• Compound

• Mixture

• Chemical Symbol

• Solution

a pure substance composed of the same type of atom throughout

• Molecule

• Element

• Mixture

• Compound

A combination of two or more substances that are not chemically bonded and can be separated. For example, salt and pepper mixed together form a mixture

• Particle

• Mixture

• Compound

• Element

A tiny piece of matter, which can be an atom, a molecule, or a smaller part of an atom

• Compound

• Element

• Particle

• Mixture

A small number written to the right and slightly below a chemical symbol in a formula. It shows how many atoms of that element are in a molecule. For example, in H₂O, the "2" is a subscript indicating there are two hydrogen atoms

• Mixture

• Compound

• Subscript

• Element

A type of mixture where one substance is dissolved evenly in another. An example is salt water, where salt is dissolved in water

• Atom

• Solution

• Mixture

• Chemical Formula