Lesson 2.1
I am a subatomic particle that is negatively charged
What is Electron
The attraction between molecules of the same substance is called
What is cohesion
These macromolecules can be used to store energy, form biological membranes and waterproof coverings
What are Lipids
These are the items that are put into a chemical reaction
What are reactants
In living systems, the presence of a (what) allows the reaction to proceed very quickly and have a lower activation energy?
what are enzymes
I am the place where you will find the neutrons and protons
What is Nucleus
What is adhesion
These macromolecules include sugar, starch and cellulose
What are carbohydrates
These are the items that come out of a chemical reaction
What are Products
In non living systems, the presences of a (what) allows the reaction to proceed very quickly
(Hint starts with a c)
what is a catalyst
I am a pure substance that consists entirely of one type of atom
What is Element
Water is considered the universal...
what is Solvent
This process joins monomers together to make a chain called a polymer
What is polymerization
This is what is needs to help get a chemical reaction started
what is activation energy
Blood is a mixture of a variety of materials. Some of these materials are dissolved in the fluid portion of blood. Other materials, such as blood cells, do not dissolve but move along with the blood. For these reasons, blood is an example of which type of mixture?
what is suspension
A substance formed by the chemical combination of two or more elements.
What is compound
These are weak acids or bases that can prevent sharp sudden changes in pH
what are buffers
These macromolecules contain nitrogen as well as carbon, hydrogen and oxygen. They are polymers made up of amino acids
What are proteins
What changes during a chemical reaction between two compounds?
what are chemical bonds
When electrons are transfered from one atom to another, both atoms become what?
what is Ions
When electrons are transferred from one atom to another they are held together by what kind of bond?
On a pH scale I have a value that is less than 7
These macromolecules are made up of nucleotides
what are Nucleic acids
Which type of chemical reaction tends to occur on its own, or spontaneously?
What are energy-releasing reactions
Water molecules are held by a hydrogen bond. The oxygen and hydrogen are attracted together because they are..... (think charges)
What are opposite charges (Oxygen is -, hydrogen is +)