Mixture or Pure Substance
Is Salt Water a Mixture or a Pure Substance?
Mixture
Oxygen is odorless and colorless. Is this a physical Property?
True, it is a Physical Property.
Smashing a Bug
Physical Change
Which of the following is a chemical change
a. Painting a wall blue
b. A bicycle rusting
c. Scratching a key across a desk
d. Making a sand castle
b. A bicycle rusting
Who is the Father of Modern Day Genetics?
Gregor Mendel
Is Aluminum Foil a Pure Substance or a Mixture?
Pure Substance
The color of the ball is red. Is this a physical Property?
True, it is a Physical Property.
Iron turning (oxidizing) into rust.
Chemical Change
Which of the following is a chemical change
a. Wood burning in a fireplace
b. Ice melting to water
c. Pouring water into a glass
d. Sewing a button on a shirt
a. Wood burning in a fireplace
An office building contains only incandescent lights. The building next door contains fluorescent lights Predict which building has higher energy bills.?
Incandescent Lights
Is Gasoline a Pure Substance or a Mixture?
Mixture
The gas is flammable. Is this a physical Property?
False, it is a Chemical Property.
Mixing sugar and water.
Physical Change
Which of the following is a chemical change
a. Freezing Liquid Mercury
b. Adding yellow to blue to make green
c. Dropping a sliced orange into a vat of Sodium Hydroxide
d. Filling a balloon with natural air
c. Dropping a sliced orange into a vat of Sodium Hydroxide
What alleles do you need for O blood type.
two recessive alleles. i i
Is Copper a Pure Substance or a Mixture?
Pure Substance
Silver necklaces tarnish and turn green. Is this a physical Property?
False, it is a Chemical Property.
Baking cookies in an oven
Chemical Change
Which of the following is a chemical change
a. Grinding pepper
b. Melting candle wax
c. Digesting a hot dog
d. Freezing Water
c. Digesting a hot dog
During the Industrial Revolution in Britain. Which animal changed color due to pollutiuon?
Peppered Moths.
Is Bronze a Pure Substance or a Mixture?
Mixture
The piece of metal is magnetic. Is this a physical Property?
True, it is a physical property.
A piece of ice melts and reacts with sodium.
Physical and Chemical
Which of the following is a chemical change
a. Dissolving sugar in water
b. Melting of Ice through sunlight
c. Crystallization of Blood
d. Milk turning sour
d. Milk turning sour
What are the Five spheres of the earth?
Geosphere, Hydrosphere, Atmosphere, Biosphere, and Cryosphere.