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
The number of atoms present in 2C6H12O6
What is 48 atoms
These are the "ingredients" that create a chemical reaction. They are found on the left side of the equation.
What is/are reactants
The formula for density
What is Density =Mass/Volume
A book resting at the edge of the desk has 100% of this type of energy.
What is Potential Energy
Fizzing and bubbling that occurs during a reaction indicate that a ____ has formed.
What is a Gas
The number of Carbon atoms are found in 2C6H12O6
What are 12 atoms of Carbon
According to the LCM, the missing mass is
5Ca (15g) + 5Cl ( __ g) => 5CaCl(20g)
What is 5
The density of a block with the mass of 20grams and a volume of 5cm3
What is 4g/cm3
The energy in the motion of a speeding train
What is Kinetic Energy
Which of the following are not clues to a chemical reaction:
- dissolved
- floated
- bubbles
- sank
What is dissolved, floated, and sank
The total number of atoms in 2(H2O2)2
What is 16 atoms
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
The mass of a crate with the volume of 8cm3 and a density of 4 g/cm3
What is 32 grams
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
Two colorless gasses react together and create a brown gas. What evidence is there that a chemical reaction has occurred.
what is a change in color
The total number of different elements in the following equation:
6CO2 + 6 H20 ---> C6H12O6 + 6O2
What are 3 different elements
This is the total number of hydrogen atoms in the equation 2 (C2 H4 O3 ) 2
What is 16
The density of the cube below
length: 2cm mass: 80g
What is 10 g/cm3
The energy transformations that occur in a flashlight
_________-->___________-->___________
What is Chemical Energy-->Electrical Energy-->Radiant Energy
The clues that indicate that a chemical reaction has occurred
What are a new
Odor, Color, Gas, Light, Temperature, Precipitate
The number of oxygen molecules in the following chemical formula
(C6H12O6) 6O2
What is 6
2Na + 2Cl ---> 4NaCl
Follows the Law of Conservation of Mass:
True or False; Why
What is : False because it is not balanced
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
The energy transformations that occur during photosynthesis in green plants
___________-->____________-->____________
What is Radiant Energy-->Chemical Energy--> Mechanical/Kinetic Energy