Changes in Matter
Tearing paper is an example of this
What is a physical reaction?
Everything that takes up space is made of this
What is matter?
What is water?
The term for stirring a solution
What is agitation?
What are solid to liquid and Physical?
This is a change in which one or more new substances are formed.
What is a chemical change? (Ex. sugar is burned or when iron rusts.)
Only one type of atom that can not be broken down to a simpler substance and retain it's properties.
What is an element?
The substance being dissolved to make a solution
What is a solute?
Increases the kinetic energy in a solution
What is increasing the temperature?
Rust forming is an example
What is a chemical change?
Two or more different elements chemically bonded together
What is a compound?
If you dissolve cocoa powder in milk. The milk is referred to as this.
What is a solvent?
The term for how fast a solute is dissolved
What is the dissolution rate?
This is what determines the state of matter of a substance.
What is the arrangement and motion of its molecules? or Temperature?
Cooking something (ex. cake ingredients or an egg)
What is an example of a chemical change?
This is the name of the small number that appears at the bottom of a chemical formula.
What is a subscript?
The universal solvent
What is water?
Why agitation increases the dissolution rate
What is it makes the molecules move around faster, bumping into each other, and surrounding the solute faster?
These are the five signs (evidence) that a chemical reaction has taken place.
What are color change, gas bubbles, solid forms, giving off heat, and giving off light?
Dissolving cocoa in hot water
What is a physical change?
This is the name of the large number that appears in front of the chemical formula.
What is a coefficient? (It tells the number of molecules of a particular substance.)
What is a Homogenous mixture?
Three ways to increase the rate of dissolution
What is increase agitation, temperature, and surface area?