Introduction to Chemistry
The 5 areas of Chemistry are :
organic, inorganic, biochemistry, analytical, physical
Anything that occupies space and has mass
Who was the first person to use the term atom (atomos) when describing that matter can be divided into small pieces.
Democritus
Most elements are____________.
Metals
What is the formula of Aluminum sulfide
Al2S3
What axis would I put a dependent variable on?
Y axis
Have a composition that is uniform throughout
Homogenous Mixture
An element's _________ is the number of protons in the nucleus of an atom of the element.
What element group does not want any electrons? (Their outer orbital is full)
Noble Gas.
the force of attraction that holds metals together; it consists of the attraction of free-floating valence electrons for positively charged metal ions
Metallic Bond
True/ False : If you think a piece of glassware looks cold, it is alright to grab it with your hands.
False
What kind of mixture is a salad from AppleBee's?
Heterogenous
The atom with 17 electrons and 18 neutrons is _____
Chlorine-35
The energy required to remove an electron from an atom
Ionization energy
What is the electrical charge of an ionic compound?
neutral
When heating a substance in a test tube, the test tube should be pointed
Pointed away from you and your partner
Which type of mixture can be separated using distillation method?
Homogenous Mixture
True/False :Energy levels greater than 1 have multiple orbitals with different shapes and at different energy levels or sublevels.
True
Which scientist was credited by discovering the electron from his research using a cathode ray tube?
J.J. Thomas
What is the Formula of Phosphorous pentachloride
PCl5
Which area of study would you use to determine the components of an unknown liquid?
analytical chemistry
The process that separates a solid from a liquid in a heterogeneous mixture is called
Filtration
What was a limitation of Rutherford's atomic model?
Didn’t explain the chemical properties of elements, such as characteristic colors of metals when heated in a flame
A(n) ____________ of energy is the amount of energy required to move an electron from one energy level to another energy level.
quantum
__________states that in forming compounds, atoms tend to achieve the electron configuration of a noble gas.
Octet Rule