The Nature of Matter
Properties of Water
Carbon Compounds
Chemical Reactions and Enzymes
Energy Changes
100
The subatomic particles that make up atoms are protons, neutrons, and electrons.
What is three subatomic particles make up atoms.
100
There is an uneven distribution of electrons between the oxygen and hydrogen atoms.
What are water molecules polar
100
compounds made up of carbon, hydrogen, and oxygen atoms.
What are carbohydrates
100
always involve changes in the chemical bonds that join atoms in compounds.
What happens to chemical bonds during chemical reactions?
100
chemical reactions that release energy often occur spontaneously. Chemical reactions that absorb energy will not occur without a source of energy.
What are enzymes important to living things?
200
they have the same number of electrons, all isotopes of an element have the same chemical properties.
What is all of the isotopes of an element similar?
200
Contain higher concentrations of H+ ions than pure water and have pH values below 7.
What are acidic solutions? What are basic solutions?
200
a small unit that can join together with other small units to form polymers.
What is monomers.
200
releases energy often occur spontaneously.
What does energy changes affect whether a chemical reaction will occur?
200
the reactants of enzyme-catalyzed reactions.
What are substrates?
300
the main types of chemical bonds are covalent bonds and ionic bonds.
What is the two main types of chemical bonds?
300
An attraction between molecules of the same substance.
What is cohesion.
300
macromolecules containing hydrogen, oxygen, nitrogen, carbon, and phosphorus.
What is nucleic acid.
300
Chemist call the energy that is needed to get a reaction started.
What is activation energy.
300
hexokinase, glucose, ATP,
What are examples of enzymes- catalyzed reactions?
400
A substance formed by the chemical combination of two or more elements in proportions.
What is a chemical compound?
400
Such mixtures of water and nondissolved material.
What is suspensions.
400
macromolecules that contain nitrogen as well as carbon, hydrogen, and oxygen.
What is proteins.
400
a substance that speeds up the rate of chemical reaction.
What is a catalyst.
400
A substrate fitting into an active site on an enzyme
What happens after the substrate binds to the enzyme?
500
It forms when electrons are shared between atoms.
What is a covalent bond.
500
weak acids or bases that react with strong acid or bases to prevent sharp, sudden changes in pH.
What is buffers.
500
proteins that are polymers of molecles
What is amino acids
500
proteins that act as biological catalyst.
What are enzymes.
500
making materials that cells needs, releasing energy, amd transferring information.
What is enzymes playing a critical war in chemical pathways?
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The Chemistry of Life
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