States of Matter
What are the 3 states of matter?
Solid, Liquid and Gas
What does density measure?
How much mass in a certain volume
What type of change can be reversed?
PHYSICAL CHANGES
Will the mass of the reactants and all products be the same or change?
it will be the same!
When is your exam for unit 7.1?
THURSDAY!! 10/23
What is the vocab word for the temperature when a liquid turns into a gas? (english or spanish)
Boiling Point or Punto de ebullicion
What is the equation for density?
Density= mass/volume
Dissolving salt in water is what type of reaction?
PHYSICAL, we can get the salt back out if we boil off the water.
What law states that is is impossible to create new matter?
Does Mr. Rodriguez have any kids of his own? (Not including pets)
NO
In a bathbomb what two solids combined to create the gas?
Citric Acid and Baking Soda
QUICK MATHS!!
What is the density of an object that has the mass of 15 grams and a volume of 5cm3
3g/cm3
Chemical changes create new___________?
Substances, molecules, compounds
How many atoms are in C6H12O6
24 atoms
Ruby!
Order the states of matter from least to most dense
Gas, liquid and then solid
What state of matter is least dense?
Gas
What kind of change did the bathbomb undergo?
Chemical
What is the left side of the equation called?
What is the right side of the equation called?
Reactants
Products
Why did the mass of the bath bomb in an open system decrease in mass?
Mass escaped in the form of gas!
Come up to the board and draw us what gas would look like in a container!
Atoms should be spread far apart and moving rapidly!
Why would an object float on water? EXTRA POINTS IF YOU KNOW THE DENSITY OF WATER!!!
The object is less dense than water. THE DENSITY OF WATER IS 1.01
What gas was produced by the reaction of a bath bomb and water?
Carbon Dioxide, or CO2
Come up to the board and balance the following equation
__N2 + __H2 =__NH3
1N2 + 3H2 = 2NH3
Where did Mr. Rodriguez travel this summer for his honeymoon?
Cruise to Mexico!