Unit 1: Investigating Chemicals Vocabulary

the formation of a new substance with different properties; cannot be undone by physical means

• Chemical Reaction
• Physical Reaction
• Nuclear Reaction
• Biological Reaction

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

a representation of a compound in which the elements are represented by their symbols and subscripts represent the number of atoms of each element

• Chemical equation
• Chemical formula
• Atomic structure
• Ionic bond

Tags

NGSS.MS-PS1-1

a change caused by the interaction of two or more substances resulting in the formation of new substances

• Chemical Reaction
• Physical Reaction
• Nuclear Reaction
• Electromagnetic Reaction

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

representation of the name of an element; written as a capital letter or a capital letter followed by a lowercase letter(s)

• Atomic number
• Chemical symbol
• Atomic weight
• Electron configuration

a pure substance made by chemically combining two or more elements; represented by a chemical formula

• Compound
• Mixture
• Solution
• Atom

Tags

NGSS.MS-PS1-1

a pure substance that cannot be broken down chemically into simpler substances

• Element
• Compound
• Mixture
• Solution

change which alters the physical properties of a substance without changing its identity

• Chemical change
• Physical change
• Nuclear change
• Biological change

the solid that is formed as a result of a precipitation reaction

• Sediment
• Precipitate
• Solution
• Gas

a substance that is not mixed with any other substance

• Pure Substance
• Mixture
• Compound
• Element

the number written to the right and slightly below an element in a chemical formula; represents the number of atoms of an element present in a chemical formula

• Atomic number
• Atomic mass
• Coefficient
• Subscript