Classification of Matter
Naming/ Formula
The Periodic table
Conversions
Empirical and Molecular formula
100
In _____ matter, atoms or molecules have a lot of space between them and are free to move relative to on another.
Gaseous
100
What is the formula for the compound formed between Calcium and sulfur
CaS
100
The alkali earth metals are found in which group?
2A
100
What is Avogadro's number?
6.022 x 10^23 particles/atoms
100
Write the empirical formula for CCl4.
CCl4
200
What is this an example of?
A pure substance
200
Name the compound SrI2
Strontium Iodide
200
Main group elements are found in groups?
1A-2A and 3A-8A
200
What is the molar mass of K3Fe(C2O4)3
437.15 g/mol
200
What is the empirical formula for the compound C2H4O2
CH2O
300
A composition that is the same throughout is known as
a homogenous mixture
300
Name the compound HNO2 (aq)
Nitrous acid
300
What is the atomic mass of this element?
6.941
300
Calculate the number of moles in 72.5 g CCl4
0.471 mol
300
A compound has the empirical formula CH2O and a formula mass of 120.10 amu. What is the molecular formula of the compound?
C4H8O4
400
A _____ is made up of only one component, and its composition is invariant.
Pure substance
400
Write the formula for iron (II) phosphate
Fe3(PO4)2
400
Which element has 17 protons in its nucleus?
Cl, Chlorine
400
Calculate the number of moles in the sample 12.4 g C12H22O11
0.0362 mol
400
A compound is 52.14% C, 13.13% H, and 34.73% O by mass. What is the empirical formula of the compound?
C2H6O
500
A substance that cannot be chemically broken down into simpler substances is a(n)
element
500
What is the formula for the compound that forms between potassium and carbonate.
K2CO3
500
How many neutrons does this element have?
20/10Ne
10
500
How many atoms are in 162 grams of platinum?
5.00 x 10^23
500
A component of protein called serine has an approximate molar mass of 100 g/mol. If the percent composition is as follows, what is the empirical and molecular formula of serine?
C3H7O3N is both