Phase Change
What is Solid to Liquid
What is Melting?
What is Matter
anything with mass and/or volume
What is a Property?
Something that describes matter
What is a diamond?
Pure Substance
What is a homogenous mixture compared to a heterogeneous ?
Substances that are mixed well vs. substances that are not mixed well.
What is Sublimation?
Solid to gas
What is NOT matter?
Sound, light, electricity
What is a Physical Property?
characteristics that can be observed without changing the substance
What is a Pure Substance?
Matter that always stays the same
Define miscible and immiscible
miscible: 2+ liquids mix well
immiscible: 2+ liquids that do not mix well
What is Phase Change?
From solid to liquid to gas and back; doesn’t change composition or mass
What are 3 states of matter?
Gas
Solid
Liquid
What is a Chemical Property?
describes the way a substance reacts when it changes
What can substances be classified into?
Elements, Compounds, Molecules
Define suspension, colloid, and solution.
Solution:substances that dissolve/ homogenous
Suspension: separates into layers/ heterogenous
Colloid: particles vary in sizes large and small, cant be filtered, thicker/ homogenous
Law of Conservation of Energy is…
Energy cannot be created or destroyed
What is Matter made of?
atoms and molecules that act like tiny particles.
What are 5 physical properties?
Conductivity, viscosity, malleability, hardness, density, etc.
What is a Mixture classification?
solution, suspension, colloid
Define reactant and product
reactant: starting materials in chemical reaction; start
Product: substances produced by chemical reaction; end result
In Condensation, is Energy added or taken ?
Taken away
What is Energy’s role in matter?
Moves or changes matter
What is Baking Soda Bubbling in Vinegar?
Chemical property
what are ways to separate mixtures?
Distillation (boiling) and filtration (particle size)
Define exothermic and endothermic
Endothermic: Chemical reactions that absorb energy
Exothermic: Chemical reactions that releases energy