December Chemistry Flash Cards
What is a Compound?
A pure substance whose smallest unit is made up of atoms of MORE than one type of element.
What is Heterogeneous Mixture?
TWO or more substances that are together but do NOT combine chemically to form a new, pure substance.
A mixture with VISIBLE components and does not look the same throughout.
What is Homogeneous Mixture?
A mixture that appears the same throughout
Is sugar a compound or an element?
Compound
Is Chili Heterogeneous mixture or Homogeneous mixture?
Heterogeneous
Is Mild a Heterogeneous or Homogeneous mixture?
Homogeneous
During a phase change, the temperature of a substance ________.
Varies
What is Volume?
Anything that takes up space and has mass.
What is Plasma?
The 4th State of Matter
It is NOT common on Earth
What is Solid?
Definite shape and volume, particles are packed very closely.
What is Liquid?
Matter with a definite volume but o definite shape.
What is Surface Tension?
Uneven forces acting on the particles of a liquids surface.
What is Chemical Reaction?
The processes where substances change into different substances through the breaking of chemical bonds.
What is the difference between REACTANTS and PRODUCTS in a CHEMICAL REACTION
4 types of evidence a chemical reaction has taken place.
Gas Bubble
Color Change
Precipitation
Energy Released or Used Up
What are the 4 Main Types of Chemical Reactions?
Synthesis
Decomposition
Single Replacement
Double Replacement
What is a Synthesis chemical reaction
Occurs when two elements combine to form a compound.
What is a Combustion chemical reaction?
A combustion reaction is a reaction in which a substance reacts with oxygen gas, releasing energy in the form of light and heat. Combustion reactions must involve O2 as one reactant. (Think marshmallow burning on a stick.)
