Show:
Acids & Bases
Physical & Chemical Properties
Physical & Chemical Changes
Density, Volume, Mass
Wild Card
100
A substance that tastes sour, has a sharp smell, and can burn or irritate the skin would be a(n) _____________.
What is an ACID.
100
What types of properties are characteristics of matter that can be observed WITHOUT CHANGING the identity of the material?
Physical Properties
100
Watching ice form on your windshield would be an example of a _______________ change.
Physcial (it's a phase change)
100
Is density size dependent or size independent?
Size independent
100
What is the formula for finding denisty?
D = M/V
200
Name two physical properties of a base.
Tastes BITTER Feels SLIPPERY
200
What is a chemical property?
A characteristic of matter that allows it to change into a new type of matter.
200
Dropping a mentos into diet coke and watching the soda spew out would be a ______________ change.
Physical (the carbonation was already there, it's just reacting with the pockets in the mentos)
200
A solid object has a length of 3 cm, a height of 4 cm, and a width of 5 cm. What is the VOLUME of the object? What formula did you use to solve?
l x w x h 3 x 4 x 5 = 60 cm cubed
200
How many animals did Moses bring with him on the ark?
none - Noah brought the animals on the ark
300
How do you know if a substance is neutral? What is the only substance that is neutral?
It has a pH of 7 Distilled Water
300
How easily one thing reacts to another is known as _________.
Reactivity
300
What is the only sure way to determine that a chemical change has occured?
A NEW TYPE OF MATTER has formed
300
A marble with a MASS of 24.0 g is dropped into a graduated cylinder and the water level raises 6.0 mL. What is the density of the marble?
D = M/V D = 24 g/6 mL D = 4 g/mL
300
What are some uses of a base?
deoderant, leather tanning, antacid, drain cleaners, household cleaners
400
What do scientists use to determine whether a substance is an acid or a base? Give two different examples.
Indicators: -pH paper -Litmus paper -Bromothymol blue -Phenolphthalein -Iodine
400
Name 3 examples of a physical property.
Shape, Color, Mass, Weight, Density, Volume, State of Matter
400
Erosion, or weathering of a mountain, is an example of what type of change?
Physical Change
400
An object has a volume of 2.5 mL and a density of 5.0 g/mL. What is the objects MASS?
M = D x V M = 2.5 mL x 5.0 g/mL M = 12.5 g/mL
400
What would be classified as a strong acid? strong base?
Strong Acid = 0-2 Strong Base = 12-14
500
What happens to blue litmus paper in the presence of an acid? in the presence of a bas?
Acid - turns red Base - stays blue
500
Name 2 examples of a chemical property.
Reactivity, ability to rust, ability to burn, etc.
500
Name the 5 signs that a chemical change has taken place.
1. Change in Temp. 2. Change in Color 3. Production of Gas 4. Production of Light or Sound 5. Formation of a Solid (Precipitate)
500
What instruments are used to measure the MASS and VOLUME of a regular shaped solid?
Mass - triple beam balance Volume - Ruler or Graduated Cylindar
500
What is the definition of weight? Is it size dependent or independent?
the force of gravity acting on an object - size dependent