Chemistry 1
What are the elements in Group 18 called ?
Noble Gases
A dissolved substance is called ?
Solute
What is the formula to find energy using specific heat?
q=mc(delta)t
What type of compound is between two non metals
covalent
Describe the difference between an ion and an isotope.
An ion has a charge due to the change in electrons. An isotope has a different number of neutrons.
What is Proton number similar to?
atomic number
The ability of a solute to be dissolved in a particular substance is called ?
Solubility
Convert 0.53m to cm
53cm
What does a graduated cylinder do ?
measure volume
A chemical reaction where two elements in different compounds trade places is what ?
Double Replacement
Type of bonding in calcium oxide
ionic bonds
A 4.0 g sample of iron was hated from 0 C to 20C. It absorbed 35.2 J of energy as heat. What is the specific heat of this piece of iron?
0.44J/g C
Which is Mrs. Krueger's favorite Harry Potter book?
Book 6: Half Blood Prince
Products of CaCO3 and NaCl
CaCl + NaCO3
What is the charge of a neutron?
neutral
Products formed from Mg(OH)2 + NaCl
MgCl2
NaOH
Number of molecules in 32 g of methane CH4
12.04*1023
What does q represent in thermodynamics?
Heat
Used to measure mass
triple beam balance or scale
What is Mrs. K's dogs name?
Tiger Lily
For an Exothermic Reaction, delta H is always
negative
Sublimation is a what kind of process. (Endothermic or Exothermic)
Endothermic
A 500 gram cube of lead is heated from 25 °C to 75 °C. How much energy was required to heat the lead? The specific heat of lead is 0.129 J/g°C.
Q = (500 grams)·(0.129 J/g°C)·(50 °C)
Q = 3225 J
elements that can exist with multiple charges
Transition elements
What is combustion ?
Burning. Oxygen gas is one of the reactants and water is one of the products.