Show:
Reactions
Chemical equations and stuff
Miscellaneous
Atomic theory and stuff
Periodic Table
100
Type of reaction in which one element takes the place of another in a compound.
What is a single-displacement reaction.
100
Equations are balanced by changing these.
What are the coefficients.
100
An ion that has two or more elements.
What is a Polyatomic ion.
100
What an electron does after it falls back to its original energy level.
What is ...emits energy.
100
The column or family of elements in an electron table reveals the number of these.
What are valence electrons.
200
A substance that speeds up the rate of a reaction without being permanently changed or used up.
What is a catalyst.
200
A balanced chemical equation provides mole __________ Of the substances in the reaction.
What is ratio... In mole ratio.
200
The forth state of matter which is most common in the universe but least common on Earth.
What is plasma.
200
A representation of the way electrons are distributed into sub levels and orbitals in the most stable arrangement. This is Aluminum's.
What is an electron configuration
200
This group of elements contains F, Cl, Br, and I.
What is the halogens.
300
This occurs when forward and reverse reactions take place at the same rate and there is no net change in the amount of products and reactants.
What is equilibrium.
300
The five types of chemical reactions.
What are synthesis, decomposition, single displacement,double displacement, and combustion.
300
Atomic radii increase as you move this way in the periodic table.
What is increases as you move down and to the left.
300
The average atomic mass of that element stated in grams rather than atomic mass units.
What is molar mass.
300
The number of energy levels in an atom can be determined by ...
What is the period.
400
A metal and a nonmetal forms one of these.
What is an ionic compound.
400
Signs of that a chemical reaction has occurred. Name at least three.
What are color changes, precipitate of a solid, heat or light, odors or gas released.
400
The study of quantitative relationships between reactants and products in a chemical reaction.
What is Stoichiometry.
400
The volume of an atom is made up mainly of this.
What is empty space.
400
These elements in column 15 are metaloids.
What are Arsenic and antimony.
500
The reaction of sodium hydroxide and fat makes this product.
What is soap.
500
When writing equations, symbols in parentheses are put after formulas to indicate this.
What is the state of the substance.
500
The group or unit of measure used to count numbers of atoms, molecules, ions, or formula units of substances.
What is the mole.
500
What is your tutor's name?
What is Mrs. Malek
500
The s block is formed by these two columns.
What are columns one and two.