Elements, Molecules, Compounds
Metals and Alloys
Mixtures/Solutions
Physical/ Chemical Properties, and Solutions Continued
The Atom and Solutions Continued Again
100
What are the most common elements in living things?
Hydrogen, Carbon, Oxygen.
100
Beryllium. Alloy or metal?
Metal
100
What is it called when a solution reaches its limit of holding a salt?
Saturation
100
What type of reaction occurs when iron and oxygen combine to form rust?
A chemical reaction
100
What are the substances called that start a chemical reaction?
Reactants
200
What is a molecule?
When two or more atoms are bonded together.
200
How many elements are in this compound? C6H12O6
3
200
What is a mixture?
When two substances come together but keep their original physical properties.
200
What is a physical property?
Anything you can taste, touch, smell, feel, or see.
200
Do all salts have the same solubility in water? Explain.
No. The type of salt or sugar determines how much is needed to make a liquid fully saturated.
300
What is a compound?
A molecule with more than one element.
300
How many atoms are in this compound? C6H12O6
24
300
What is it called when one substance dissolves in another?
A solution
300
Name 2 solutions.
salt water, sugar water, or lemonade.
300
What is another name for the number of protons in an atom?
The atomic number.
400
The chemical formula for table salt is NaCl. What type of substance is NaCl?
Compound
400
Name 3 properties of metals. And give an example of a metal.
1. Can be bent 2. Solid 3. Conducts electricity 4. Conducts heat 5. Shiny
400
Is salt water a mixture, solution, or both?
Both a mixture and a solution.
400
Name one way someone can test if a liquid is a solution.
Put the liquid in an evaporating dish.
400
How many protons does an oxygen atom have?
Eight.
500
Name a solution that is not a mixture.
Not possible
500
Name 3 alloys.
Brass, Steel, Bronze, Alnico
500
How do you know when a solid and a liquid form a solution?
When the solid dissolves in the liquid.
500
What are the new substances formed in a chemical reaction called?
Products
500
What is the basic building block of matter that cannot be broken down into a simpler substance?
An atom
M
e
n
u