Chemistry Categories
the study of the composition, structure, and properties of matter, the processes that matter undergoes, and the energy changes that accompany these processes
What is chemistry?
The elements in group 18 of the periodic table are generally unreactive and are gases at room temperature
What are noble gases?
comparison of a measure against a known standard
What is accuracy?
The ability to reproduce the measurement
What is precision?
The study of non-organic compounds
What is Inorganic Chemistry?
This is an element that has some characteristics of metals and some characteristics of non-metals
What are metalloids?
A combination of two or more atoms.
What is a Molecule?
What is Left hand are not significant and right hand zero are significant only in presence of a decimal.
The study of the components and composition of materials
What is Analytical Chemistry?
The smallest unit of an element that maintains the chemical identity of that element
What is Atom?
The sum of the number of Protons plus Neutrons in the Nucleus.
What is The Atomic Mass?
States that energy can be absorbed or released, but it is never created nor destroyed
What is the law of conservation of energy?
How many significant figures are in the following measurements?
0.002035
What is 4?
The study of the properties and changes of matter with relation to energy
What is Physical Chemistry?
Columns or multiple columns in the periodic table.
What is a Group?
A pure substance that cannot be broken down into simpler, stable substances and is made of one type of atom
What is an element?
A type of observations based on physical characteristics such as: color, odor, shape, etc. & typically subjective descriptions based on the five senses
What is qualitative observations?
Deals with Elements Containing Carbon (Which is Pretty much everything Living)
What is Organic Chemistry?
A substance that can be broken down into simple stable substances, but is made from the atoms of two or more elements that are chemically bonded
What is Compound?
The Alkaline Earth Metals are in what group?
What are group 2A?
What is the formula to solve percent error?
What is (measure-accepted)/accepted x 100?
They describes how and why an event occurs. They cannot be proven 100% true, but they are as close as scientists can get. They are essentially ‘facts’, however, they do occasionally change as new evidence becomes available.
What are theories?