Vocabulary
Physical Changes
Chemical Changes
Mixtures and Compounds
Random Randoms
100
The smallest particles of an element.
What is an atom?
100
This is a change that begins and ends with the SAME type of matter.
What is a physical change?
100
This is a change in matter itself.
What is a chemical change?
100
When we made a solution of salt water, the water turned into a gas leaving the salt behind, this is an example of?
Evaporation
100
Which of these is NOT an element? 1. rust 2. oxygen 3. gold 4. carbon
1. rust rust is a chemical reaction
200
A substance made up of only one type of matter.
What is an element.
200
What are the three states of matter?
1. solid 2. liquid 3. gas
200
All chemical changes involve this.
Energy
200
Water is a compound made up of two elements, what two elements are they?
Water and hydrogen
200
Why do we use the periodic table?
To classify and organize elements according to their properties.
300
When two or more types of matter are combined but keep their chemical properties.
What is a mixture?
300
This is a physical change or mixture that is formed by blending two elements completely.
What is a solution?
300
Give an example of a chemical change.
Examples: a penny or jewelry tarnishing, rust forming on metal, our penny experiment forming copper acetate,
300
This means to sort things into groups according to their characteristics.
What is to classify?
300
State changes occur by using this?
Heat
400
This separates things by size, so smaller parts of a mixture can pass thru the holes, leaving the bigger parts behind.
What is a filter?
400
Give an examples of a physical change.
Example: cutting paper, rolling out dough, raking leaves, melting an ice cube
400
Why did copper acetate form on our penny in our penny experiment?
It went through a chemical change when the copper was mixed with the vinegar vapors and air.
400
What are the 3 different ways you can separate a mixture?
1. pick apart and sort 2. use a filter 3. evaporation
400
Why does adding heat cause a state change, what happens to the particles? (hint: think about our demonstration in the multi-purpose room when we were particles)
As you heat up the matter, particles begin to move faster and faster which makes them spread apart further the hotter they get
500
When two or more elements are combined chemically.
What is a compound?
500
What are the three ways that matter can change physically?
1. change in size or shape 2. change in texture or position 3. change in state
500
What other name do we use to describe a chemical change?
A chemical reaction
500
What are some examples of mixtures?
Example: popcorn and M&M mixture peas and carrots a pot of sand and soil a glass of salt water
500
What is the symbol for oxygen?
O
M
e
n
u