Show:
Laws and Equations
Famous People and their Discoveries
Vocabulary
Periodic Table
Naming Rules!
100
Which law states, "no matter what it's source is, a particular compound is composed of the same elements in the same parts (fractions) by mass?
What is law of definite (or constant) composition?
100
What did Millikan discover in the oil-drop experiment?
What is the charge of an electron (it's negative)?
100
What is the definition of element?
What is the simplest type of matter with unique physical and chemical properties?
100
In period 4, what is the name of the smallest transition element and which column is it located?
What is scandium? It is located in column 3B.
100
How are ionic compounds named?
They are named by listing the metal cation followed by the nonmetal anion
200
During a chemical reaction, the total mass of the reactants equals the total mass of the products. Which law is being described?
What is the law of mass conservation?
200
Who discovered the nucleus of an atom and through which experiment?
Who is Ernest Rutherford and what is the gold foil experiment?
200
What is the definition of a heterogeneous mixture?
What is a mixture that has one or more visible boundaries between the components.
200
What are characteristics of metals? (list 3)
They are generally shiny, solid at room temp, and conduct heat and electricity well.
200
When are roman numerals used?
What is transitional metals? (When transitional metals are used, they can give a various amount of electrons)
300
A mole is defined as the amount of a substance that contains the same number of entities as th number of atoms in 12 g of carbon-12. What is its value and list three ways it can be used as a conversion factor.
What is 6.022E23 stuff? It can be used to convert mass (g) to an amount (mol) of a compound; amount (mol) of compound to molecules (formula units) of a compound; and amount (mol) of a compound to amount (mol) of elements in a compound.
300
What was the significance of the cathode ray experiment?
What is the discovery of negatively charged particles?
300
The study of the quantitative aspects of formulas and reactions is the definition for what word?
What is stoichiometry?
300
Alkali metals are located in which group?
What is Group 1A
300
When naming covalent bonds, do we use mono- on the first element if it only appears once. Eg) moncarbon monoxide
No. Mono- is the only prefix which isn't named on the first element.
400
What is theoretical and actual yield? How are they used in calculating percent yield?
What is the amount of product calculated from the molar ratio in the balanced equation (theoretical yield) and the amount of product actually obtained (actual yield)? They are used in calculating the percent yield by taking the actual yield and dividing by the theoretical yield and multiplying it by 100.
400
Who measured the ratio of the mass of a cathode ray particle to its charge?
Who is J. J. Thomson?
400
What is the definition of a chemical equation?
What is a statement that uses chemical formulas to express the identities and quantities of the substances involved in a chemical or physical change?
400
What is mass number and where is it located on an element within the periodic table
What is the total number of protons and neutrons in the nucleus of an atom. It's symbol is A and is not located on the periodic table.
400
When naming acids with only an element, how would it be named?
It would begin with hydro___ic acid
500
When given an empirical formula, what steps are used to convert it into a molecular formula?
1. Determine the mass (g) of each component element 2. Convert each mass (g) to amount (mol) and write a preliminary formula 3. Convert the amounts (mol) mathematically to whole-number (integer) subscripts
500
What were the 4 postulates of Dalton's atomic theory?
1. All matter consists of atoms 2. Atoms of one element cannot be converted into atoms of another element 3. Atoms of an element ar identical in mass and other properties and are different from atoms of any other element 4. Compounds result from the chemical combination of specific ratio of atoms of different elements
500
What is the word and definition for the simplest type of ionic compound?
What is binary ionic compound? It is defined as a compound composed of two elements.
500
What impact do isotopes have in calculating the atomic mass?
Elements often appear in various mass numbers, or isotopes. By calculating the factional abundance of each isotope and adding them together, we can calculate the atomic mass unit of a particular element.
500
When naming covelant bonds (ones with nonmetals), which one would come first?
The one that is least electronegitive to the one that is most electronegative. In other words, the one that can give the most electrons comes first.