Unit 7.1 Review (Fill in the blank)

Something that helps identify & classify different types of matter.  They are always the same whether the sample being observed is big or small

Matter cannot get in or out.

Stays the same mass

Particles move faster or slower

Matter can get in or out.  

Mass changes.

Particles can leave or join the system

Made up of the same type of material throughout. It is PURE.  It is not a mixture

Characteristics of a substance that don’t change. Consistent with any sample of that substance, no matter the size (Color, melting point, solubility, density, etc.)

When a solid dissolves into a liquid, the solid breaks apart into particles too small to see and mixes completely in the liquid.

Can be dissolved into something else

Does not dissolve into something else

A blend of 2 or more substances. 

The amount of space a substance takes up (volume) in relation to the amount of matter in the substance (mass)

D= M/V

A chemical property of matter. How a substance interacts with fire

When new substances are produced from one or more molecules of the old substances, some of the atoms that make up the molecules of the original substance(s) break apart and/or join together to make different types of molecules

A group of two or more atoms (elements) that are bonded together.  The atoms/elements can be the same (H2) or different (H2O)

Molecules that bond together in a specific way. Not every molecule is a compound. All compounds are molecules.

Expression which states the number and type of atoms present in a molecule C₆H₁₂O₆