Atoms and Molecules
Names and Formulas
Acids and Bases
Hydrocarbons
Chemical Reactions
100
An atom becomes one of these if it gains or loses electrons.
What is an ion
100
Beware of this dangerous chemical, sometimes known as dihydrogen monoxide.
What is water?
100
When the pH is greater than 7.
What is a base?
100
In an alkane with 4 carbon atoms, there are this many hydrogen atoms.
What is 10?
100
The left hand side of a chemical equation.
What is are the reactants?
200
When two different elements are bonded together.
What is a compound?
200
CH4
What is methane?
200
When the pH is less than 7.
What is an acid?
200
Alkenes always have these.
What are double covalent bonds?
200
A reaction where the products have a lower energy state than the reactants.
What is an exothermic reaction?
300
It is why a paperclip can float on water.
What is surface tension (or cohesion)?
300
It is the formula for aluminum oxide.
What is Al2O3?
300
It is the pH when the concentration of H+ ions is low.
What is a pH greater than 7?
300
In an alkyne with 3 carbon atoms, the number of hydrogen atoms is this.
What is 4?
300
Where the substrate binds to the enzyme.
What is the active site?
400
These are the subatomic particles in the nucleus of an atom.
What are protons and neutrons?
400
It is the name for Mg3P2.
What is magnesium phosphide?
400
It is the pH when the concentration of OH- ions is low.
What is a pH less than 7.
400
When two compounds have the same chemical formula but different structures they are called this.
What are structural isomers?
400
Because they speed up chemical reactions, enzymes are known as these.
What is a catalyst?
500
When atoms transfer electrons to make a chemical bond.
What is an ionic bond?
500
It is the common name for NH3 (not nitrogen trihydride).
What is ammonia?
500
The pH when the concentration of OH- is equal to the concentration of H+.
What is pH 7?
500
These hydrocarbons have alternating double and single bonds in a ring structure.
What are aromatic hydrocarbons?
500
It is how an enzyme speeds up a chemical reaction.
What is decreasing activation energy?
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