Periodic Table
How many main blocks in the periodic table are divided into? What are they called?
It is divided into 4 blocks, s-block, p-block, d-block, and f-block.
How are these equations usually written?
Reactants--> Products
What is the difference between direct and inverse relationships?
Direct relationship is when one variable increases, the other one also increases, but an inverse means when one variable increases the other decreases.
How big is a mole?
= 6.02 x 10^23
What is the analogy of decomposition?
A compound splits into two or more substances
The difference between family and period?
Period = up and down. Family = left and right
What is ionic bonding?
Bonding between metal and non metal electrons are transferred
What is Boyle's Law?
The relationship between the pressure and the volume of a gas.
What does stoichiometry help you find in a chemical reaction?
It helps you calculate how much of each substance is used to make a reaction.
What are the 5 reactions?
Synthesis, decomposition, single and double replacement, and combustion.
Why does the atomic radius increase as you move down a group?
The electrons keep moving further away as they go down which increases the atomic radius.
Zn + HCl → ZnCl2 H2 +
Zn + 2HCl → Zn Cl2+h2
What is Charle’s Law?
The relationship between temperature and volume of a gas.
How many moles in 5 grams of H?
5 g H x 1 mo lH/1 g H = 5 mol H
Difference between double and single replacement?
Single: new and free. Double: 2 reactants to make, 2 new elements
What is ionization energy?
Amount of energy required to remove an electron from an atom
_ Li + _ AlCl3 → _ LiCL + _ Al
3_ Li + _ AlCl3 → _3 LiCL + _ Al
What conversion do we use to convert Celsius into Kelvin?
K=C+273
What does molar mass mean?
The mass (measured in grams) of 1 mole of a substance.
What needs to be present for a combustion to take place?
H2O and CO2
What is Shielding?
Inner electrons in an atom partially block the positive charge of the nucleus from the valence electrons.
_ Rb + _ S8_→ _ Rb2S
16 Rb + _ S8 → 8 Rb2S
A sample of gas decreases from a volume of 1.12 L to 0.67L, If the final temperature is 92* J. What was the original temp?
610.1K
How many grams are in 1.7 moles of Chlorine?
1.7 mol Cl x 36g Cl / 1 mol Cl = 61.2 g Cl
C6H12O6 + _O2 -> _CO2 + _ H2O, →
C6H12O6 + 6 O2 6 CO2 + 6 H2O