Element, Compound, Homogeneous Mixture, Heterogeneous Mixture?
Water
Water is a compound
H2O
What is a pure substance made from only one type of atom called?
Element
What pH values are expected for a substance that is acidic?
pH values less than 7
Lemon juice has a pH around 2 and orange juice has a pH around 4.
Which is the stronger acid?
Lemon juice (pH = 2) is a stronger acid than orange juice (pH = 4)
Classify carbon dioxide as an element, compound, homogeneous mixture, or heterogeneous mixture
carbon dioxide is a compound
Chocolate Chip Cookie Dough
Chocolate chip cookie dough is a Heterogeneous Mixture
Combination of 2 or more substances that are not chemically combined
What is a Mixture?
What taste do acids and bases have?
Acids = sour taste
Bases = bitter taste
Any substance with a pH greater than 7 is a _______
Base
Pizza is an example of what type of mixture?
Pizza is a heterogeneous mixture.
Oxygen
Oxygen is an element
What is a compound?
A compound is a pure substance made from 2 or more different elements that are chemically combined.
What is soap solution classified as on the ph Scale?
What is a Base
Define Heterogeneous Mixtures
Heterogeneous Mixtures are not evenly mixed. You can see the different parts of the mixture.
True/False
Mixtures can be separated through physical means (evaporation, filtration, etc.)
True
Salt Water
Salt Water is a Homogeneous Mixture
Define a Homogeneous Mixture
A Homogeneous Mixture is a mixture in which the substances are evenly distributed.
(Examples: Air, Sugar Water)
My PH is 7
What is Neutral
When classifying matter, what are the 2 pure substances called?
elements and compounds are pure substances
What is the pH of a neutral solution?
pH of 7 = neutral solution
Mouthwash
Mouthwash is a Homogeneous Mixture
What is matter?
Matter is anything that has mass and takes up space.
A student identifies bleach with a pH of 13 as an acid. What should the correct classification be?
What is a base
What is a compound?
2 or more atoms bonded together
True/False
Many bases are used in cleaning products.
True