Chemical Reactions
Chemical Formulas
Law of Conservation of Mass
Density
Energy
100
When milk and vinegar are combined, a solid white substance forms. The clue that indicates that a chemical reaction occurred is________.
What is a precipitate
100
The number of atoms present in 2C6H12O6
What is 48 atoms
100
These are the "ingredients" that create a chemical reaction. They are found on the left side of the equation.
What is/are reactants
100
The formula for density
What is Density =Mass/Volume
100
A book resting at the edge of the desk has 100% of this type of energy.
What is Potential Energy
200
Fizzing and bubbling that occurs during a reaction indicate that a ____ has formed.
What is a Gas
200
The number of Carbon atoms are found in 2C6H12O6
What are 12 atoms of Carbon
200
According to the LCM, the missing mass is
5Ca (15g) + 5Cl ( __ g) => 5CaCl(20g)
What is 5
200
The density of a block with the mass of 20grams and a volume of 5cm3
What is 4g/cm3
200
The energy in the motion of a speeding train
What is Kinetic Energy
300
What type of change occurs when food is being digested in the small intestine where digestive acids are added.
What is a chemical change or chemical reaction
300
The total number of atoms in 2(H2O2)2
What is 16 atoms
300
This describes the mass of the reactants in a chemical equation compared to the mass of the products in the chemical equation
What is they are equal
300
The mass of a crate with the volume of 8cm3 and a density of 4 g/cm3
What is 32 grams
300
A 50g box was dropped from various elevations. Its acceleration was recorded. The box was dropped from the heights of 10M, 50M, and 100M. The box gained the most kinetic energy when dropped from this elevation.
What is 100 meters
400
The teeth breaking down food is an example of
a __________ change.
What is physical or mechanical
400
The total number of different elements in the following equation:
6CO2 + 6 H20 ---> C6H12O6 + 6O2
What are 3 different elements
400
This is the total number of hydrogen atoms in the equation 2 (C2 H4 O3 ) 2
What is 16
400
The density of the cube below
length: 2cm mass: 80g
What is 10 g/cm3
400
The energy transformations that occur in a flashlight
_________-->___________-->___________
What is Chemical Energy-->Electrical Energy-->Radiant Energy
500
The clues that indicate that a chemical reaction has occurred
What are a new
Odor, Color, Gas, Light, Temperature, Precipitate
500
The number of oxygen molecules in the following chemical formula
(C6H12O6) 6O2
What is 6
500
2Na + 2Cl ---> 4NaCl
Follows the Law of Conservation of Mass:
True or False; Why
What is : False because it is not balanced
500
The volume of water in a cylinder is 50mL. A steel marble with a mass of 25g is dropped into the cylinder and the water level rises to 55mL. What is the density of the marble?
The density of the marble is 5g/mL
500
The energy transformations that occur during photosynthesis in green plants
___________-->____________-->____________
What is Radiant Energy-->Chemical Energy--> Mechanical/Kinetic Energy