Multiple choice
True/False
Defintions
Atomic Calculations
Macromolecules
100
What are found in the space surrounding the nucleous of an atom?
What is Electrons
100
When atoms share six electrons, they are joined by a double bond?
What is false a triple bond.
100
the basic unit of matter?
What is atom
100
The atomic number for Li is 3. What is the number of protons?
What is 3.
100
table sugar is an example of?
What is Carbohydrates
200
If an atom contains 11 protons and 12 neutrons, its atomic number is?
What is 11?
200
It takes a lot of energy to raise the temperature of water. This means that the wast has a high pH.
What is false heat capacity.
200
Center of an atom?
What is nucleus.
200
The number of protons is 17, what is the atomic number?
What is 17.
200
These are polymers of molecules called amino acids.
What is proteins
300
Which of the following is a substance formed by the chemical joining of two or more elements in definite amounts?
What is a compound?
300
Buffers are weak acids or bases that can react with strong acids or bases to prevent sudden changes in pH.
What is true.
300
A weak acid or base that stops sudden changes in the pH.
What is buffer?
300
The atomic mass for H is 1, what is the number of electrons?
What is 1.
300
Compound made up of Carbon, hydrogen, and oxygen.
What is Carbohydrates.
400
A covalent bond is formed as the result of...
What is sharing electrons?
400
Th molecules of life are all carbon based.
What is True.
400
Compound that releases hydroxide ion in a solution; pH more than 7
What is base.
400
If Li atomic muber is the 3 and the atomic mass is 7, what it the number of neutrons?
What is 4?
400
Macromolecules containing hydrogen, oxygen, nitrogen, carbon, and phosphorus.
What is Nucleic acids.
500
If you stir salt into a boiling water, you produce a...
What is Solution?
500
The substance that are present when a chemical reaction begins are the products.
What is False reactants.
500
Attraction between molecules of the same substance.
What is Cohension
500
If W has 74 protons and 110 neutrons, what is the number for Atomic Mass?
What is 184?
500
A substance that speeds up the rate of a chemical reaction.
What is a catalysts.
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