Chem/Phys Semester 1 Final Review

Unit 1

100

What type of observation states that a water bottle is 32 cm tall

quantitative

200

Dr. Timothy Lash , a prominent research chemist at Illinois State University, studies natural products that contain carbon.  He is a(n) _____ chemist.

Organic

300

What is 0.5315684 in scientific notation?

5.3156840x10^-1

400

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

500

Covert 40.2 mm to dL

.402 mm

Unit 2

100

What is the phase change from a gas to a solid called?

deposition

200

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

300

Classify the following as either Endothermic or Exothermic 

A Fireworks Display

Grass Growing

Sublimation of Water

Exo

Endo

Endo

400

 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

500

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

Unit 3

100

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

200

What is the total number of nucleons (protons plus neutrons) in an atom of S-32?

32

300

What is an isotope

Different forms of the same element with a different amount of neutrons so therefore a different mass

400

Draw a Bohr Model for Br

bromine

2,8,18,7

500

 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

Unit 4

100

What group name is Astanine classified under?

Halogens

200

Which group is the most reactive metals

Alkali Metals

300

What is the most reactive nonmetal

Fluorine

400

Select the element with the highest ionization energy

S, Sr, Se, I 

S

500

Select the atom with the greatest atomic radius

Chlorine, Silicon, Argon, Magnesium

Magnesium

Unit 5

100

Classify the following as Ionic or Covalent

Al₂O₃

CO₂

CaTe

Ionic

Covalent

Ionic

200

Name 3 Properties of Ionic Compounds

Brittle, Hard, High Melting Point

300

What is the formula when magnesium and nitrogen combine

Mg₃N₂

400

Balance the following reaction

 __H₂O₂ --> __H₂O + __O₂

 2,2,1

500

Classify the Following Reaction and then Balance it

C₄H₁₀ + O₂ --> CO₂ + H₂O

2,13,8,10 

Combustion