Physical and Chemical Properties
Solid, Liquid, Gas
Chemical
The of Conservation of Mass states:
Energy cannot be created or destroyed!
Reactants.
What is the term of the result at the end of a chemical reaction?
Product
If water has reached 212 degrees fahrenheit, what physical property is it at?
Boiling Point
If snow has melted into mud, what type of change has occurred?
Physical
Who is considered the main theorist for the Law of Conservation?
What is the number that goes in front of a compound in a chemical equation?
What is the process in which substances change into different substances through the breaking and forming of chemical bonds
Chemical Reaction
If I were to ask you the pH of lemon juice, I would be asking for what kind of property?
Chemical
True or False: Once a chemical change has occurred, it is permanent.
True
What is a common compound that escapes during a chemical reaction?
Carbon Dioxide.
What is the difference between H2O and H2O2?
The subscript makes it a completely different compound. Water and Hydrogen Peroxide.
What is the area outside the system that can exchange energy and matter with the system
Surroundings
State the compound based on its physical and chemical properties:
liquid, pH of 7, attracted to most polar molecules, high solubility, high specific heat
Water H2O!
melting ice
crumpling paper
cutting hair
A carbon atom in coal becomes carbon dioxide when it is burned. The carbon atom changes from a solid structure to a gas. Is the mass the same?
YES.
Balance this chemical equation:
H2O + O2 = H2O2
2 H2O + O2 = 2 H2O2
What is a mole? (in chemistry terms)
A unit used to measure the amount of a substance
- crystalline molecular structure, solid, soluble in water, made of carbon, hydrogen, and oxygen
Sugar! C6H1206
Name three examples of chemical changes.
digestion
rusting
wood burning
Balance this chemical equation:
Fe + Cl2 = FeCl3
2 Fe + 3 Cl2 = 2 Fe + 6 Cl
6.022×10236.022 \times 10^{23}6.022×1023 particles
Avogradro's Number