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Physical or Chemical Changes
Laboratory Tools
Density
Element or Compound?
Types of Mixtures
100
Ripping a piece of paper is an example of this type of reaction.
What is a physical reaction?
100
Mass is measured using this scientific tool.
What is a triple beam balance?
100
This is the standard formula we use to find density.
What is D=m/V? (or density = mass over volume)
100
Carbon dioxide gas is this.
What is a compound?
100
A snow-globe is an example of this type of mixture.
What is a suspension?
200
A campfire burning is an example of this type of change.
What is a chemical change?
200
The volume of a regularly-shaped object is typically measured using this tool.
What is a ruler (meterstick, tape measure, etc)?
200
The volume of a regularly-shaped object is typically given in these metric units.
What is cubic centimeters?
200
Hydrogen gas is this.
What is an element?
200
Seawater is an example of this type of mixture.
What is a solution?
300
Dissolving sugar into water is an example of this type of change.
What is physical change?
300
This item is used to measure the volume of an irregularly-shaped object.
What is a graduated cylinder?
300
The mass of a substance is typically measured in this SI (Standard International) unit.
What is grams?
300
The joining of two substances chemically will give you this.
What is a compound?
300
Dissolving a spoonful of sugar into water gives you this type of mixture.
What is a solution?
400
A change from solid to liquid to gas is this type of change.
What is physical change?
400
This unit is the best method for describing the volume of a liquid.
What is milliliters (mL)?
400
This would occur if you placed an object with a density GREATER than water in a beaker filled with water.
What is sink to the bottom?
400
This cannot be broken down into simpler substances.
What is an element?
400
This type of mixture is cloudy or opaque, uniform throughout, and contains particles that will not settle out on their own.
What is a colloid?
500
An exploding firework is an example of this type of change.
What is chemical change?
500
This is used to describe what happens to water when a graduated cyclinder is used to measure the volume of an object.
What is displacement?
500
This would be the density of a object with a mass of 4 grams and a volume of 2 cubic centimeters.
What is 2 grams/cubic centimeter?
500
Water, table-salt, and sugar are all examples of this.
What is a compound?
500
Unlike compounds -- solutions, suspensions and colloids have sustances that are only combined using this type of reaction.
What is a physical reaction? (never chemical!)