Unit 1
What type of observation states that a water bottle is 32 cm tall
quantitative
What is the phase change from a gas to a solid called?
deposition
What are the 3 subatomic particles and where are they located?
protons and neutrons in the center and electrons in the cloud or floating around the outside
What group name is Astanine classified under?
Halogens
Classify the following as Ionic or Covalent
Al2O3
CO2
CaTe
Ionic
Covalent
Ionic
Dr. Timothy Lash , a prominent research chemist at Illinois State University, studies natural products that contain carbon. He is a(n) _____ chemist.
Organic
Identify the following as an element, compound, homogeneous mixture, and heterogeneous mixture..
Chex Mix
Bag of gold coins
Steel
Mercury
Heterogeneous Mixture
Homogeneous Mixture
Homogeneous Mixture
Element
What is the total number of nucleons (protons plus neutrons) in an atom of S-32?
32
Which group is the most reactive metals
Name 3 Properties of Ionic Compounds
Brittle, Hard, High Melting Point
What is 0.5315684 in scientific notation?
5.3156840x10-1
Classify the following as either Endothermic or Exothermic
A Fireworks Display
Grass Growing
Sublimation of Water
Exo
Endo
Endo
What is an isotope
Different forms of the same element with a different amount of neutrons so therefore a different mass
What is the most reactive nonmetal
Fluorine
What is the formula when magnesium and nitrogen combine
Mg3N2
What is the difference between a theory and a law
Law states what happens and does not change where a theory tries to explain why or how something happens and is based on current evidence
Classify the following as either Intensive (I) or Extensive (E) and Physical (P) or Chemical (C).
Mass
Reactivity with acid
Color
P/E
C/I
P/I
Draw a Bohr Model for Br
bromine
2,8,18,7
Select the element with the highest ionization energy
S, Sr, Se, I
S
Balance the following reaction
__H2O2 --> __H2O + __O2
2,2,1
Covert 40.2 mm to dL
.402 mm
Rocks are sometimes used along coasts to prevent erosion. If a rock needs to weigh 2,000 kilograms (about 2 tons) in order not to be shifted by waves, how big (what volume) does it need to be? You are using basalt, which has a typical density of 3200 kg/m3
0.625 m3
A photon of green light has a wavelength of 510 nm. What is the energy of this photon? (1x10^9 nm = 1 m)
C= λv E=hv
C= 3.0 x 10^8 m/s h= 6.63 x 10^-34 J*s
3.9*10-19 J
Select the atom with the greatest atomic radius
Chlorine, Silicon, Argon, Magnesium
Magnesium
Classify the Following Reaction and then Balance it
C4H10 + O2 --> CO2 + H2O
2,13,8,10
Combustion