Chemistry Final Review

Gas Laws Assignment Chapter 14 Take the data and graph the three Gas Laws. -Can convert temperature data to Kelvin. K = C (kelvin) (celsius) Interpret the graph by answering the questions. Use the Gas Laws graphs to answer questions on the final. Due on Monday (5/14)

Gas Law Assignment 1.Volume vs. Pressure

Boyle’s Law marinasse-portafolio.blogspot.com

Gas Law Assignment 2. Temperature vs. Volume

Charles’s Law engineerstudent.co.uk

Temperature vs. Pressure 3. Temperature vs. Pressure

Gay-Lussac’s Law chemistryexplained.com

Chemistry Introduction: Measurement and Scientific Method

Measurement and Scientific Method: Precision vs. Accuracy Label each picture as precise, accurate, both, or neither.

Matter and Change

Phase Changes and Kinetic Energy

Atomic Structure

Electromagnetic Spectrum

Bohr’s Model of the Atom The electron cloud consists of energy levels. Electrons reside and move around in these energy levels. Electrons can move to other energy levels when absorb photons.

Electron Movement 1.Ground state of H Atom (lowest energy level for e-) 2.A photon (light particle) is absorbed by H’s electron. Electron becomes excited and jumps to higher energy level. 3. E- returns to ground state and emits (releases) the photon. Emitted photon’s wavelength can be detected by scientists. (Infrared region at room temp; Visble region at higher temps.)

Electron Properties and Arrangement

Periodic Table

Periodic Table: Atomic Radius

Periodic Table: Ionization Energy

Chemical Bonding

Chemical Reactions

Types of Chemical Reactions 1. Synthesis (A+ B ----> AB) 2. Decomposition (AB------> A + B) 3. Single Replacement (A+ BC ---> B + AC) 4. Double Replacement (AB + CD ---> CB + AD) 5. Combustion (C x H x + O > CO 2 + H 2 O) 6. Neutralization (Acid + Base--> H 2 O + Salt)

Chemical Reaction Energy Diagram

Chemical Reactions Rates Reaction Rates = how fast the reactants chemically change into the products. Collision Theory: Reactant particles will form products when reactants collide: -at the right position. - and exchange the right amount of kinetic energy.

Nuclear Chemistry

Nuclear Chemistry: Radioactive Decay

Chemical Quantities

Stoichiometry

Exothermic vs. Endothermic

Chemistry Final What does Chemistry study?

Scientific Notation 1.Convert to scientific notation: 2,350,921

Scientific Notation Convert to scientific notation

Metric Conversion Kilo-, Hecto-, Deka-, Base, Deci- Centi-, Milli- 5 kg = ________cg

Metric Conversion Kilo-, Hecto-, Deka-, Base, Deci- Centi-, Milli- 3.5cL= ______ L

Metric and English Conversions How many seconds is in 10.26hrs?

Metric and English Conversions Sara ran 2 miles in 16 minutes. How far did she run in kilometers? (1mi= 1600m)

Density What is the equation for density?

Density A solution has a mass of 1200 g and a density of 1.2 g/mL. What is the volume?

Density What is the density of a 50mL sample of water that has a mass of 49.6 g?

Scientific Method What are the 5 main steps to the scientific method?

Scientific Method What is the difference between qualitative and quantitative results?

Scientific Method What is the difference between accuracy and precision?

Scientific Method Determine which of the following sets of data is most precise. a.2.5, 6.0, 4.0 b.2.5, 3.0, 2.0 c.2.5, 2.4, 2.3

Scientific Method A student wanted to know how temperature affected the rate of a chemical reaction. She observed and recorded the time it took for a chemical reaction to occur at three different temperatures. What is the independent variable? What is the dependent variable?

Significant Figures How many significant figures? g ________

Significant Figures How many signficant figures? 2.104_______

Calculating using Significant Figures How many significant figures are in the answer? 1.21 g x 0.50g =

Calculating using Signficant Figures How many significant figures are in the answer? 0.45m m + 1.3g+ 4g =

Matter What are the two broad classes of matter?

Classification of Matter

Matter What is the big difference between substances and mixtures?

Mixtures Determine if the following mixtures are heterogenous or homogenous mixtures. a.Saltwater b. Vegetable soup

Compounds True or False: Compounds composition is always varied. True or False: A compound’s properties are similar to the elements making up the compound.

Physical Properties Give me example of physical properties.

Chemical properties Give me example of chemical properties.

Physical or Chemical Change Determine if the following are chemical or physical changes a.Boiling water b. Digesting food c.Burning fire wood d. Dissolving sugar in water

Mixture or Compound? air Na(OH) lead Na(OH)solution

Atomic Theory Who believed matter consisted of air, wind, fire, and earth? Who was the first to propose that matter is composed of atoms?

Atomic Theory Who was the first person to confirm using the scientific method that matter was composed of atoms?

Dalton’s Atomic Theory Identify important concepts of Dalton’s Atomic Theory.

The Atom What are the two subatomic particles that have charge?

The Atom What are the two subatomic particles that contribute mass to an atom?

The Atom What is the difference between mass number and atomic mass?

Atomic Subparticles Nitrogen is a neutral atom. It has 7neutrons and 7 electrons. What is Nitrogen’s number of protons? What is Nitrogen’s atomic number? What is Nitrogen’s mass number?

Atomic Subparticles Ca 2+ has a mass number of 40 and an atomic number of 20. How may protons does Ca 2+ have? How many electrons does Ca 2+ have? How many neutrons does Ca 2+ have?

The Atom What is an isotope?

Bell Ringer How many significant figures? a ____ b _____ c.10,840______ d.24.09/ 4.2______ e = ______

Isotope C-12 and C-13 are isotopes. What subatomic particle has the same value with each isotope of carbon above? What subatomic particle has different values with each isotope of carbon above?

Radioisotope What is a radioisotope? What are the three types of radioisotope particles we talked about?

Nuclear Radiation paper wood concrete or lead Radiation charges Radiation Penetration

Alpha Particles Alpha rays(α) = Emission of a He nucleus. alpha particles are (+) charged. large mass and charge prevents alpha particles from traveling and penetrating far. 1. parent decays α + daughter isotope isotope particle (stable) (unstable) (He nucleus)

Nuclear Decay with α Particles Mass number decreases by four Atomic Number decreases by two (Daughter isotope that is more stable)

Nuclear Decay: Beta Particles Beta Rays (β) = A neutron breaks into a p+ and e- p+ remains in nucleus and e- is emitted. Beta rays have a (-) charge. Beta rays travel and penetrate farther because smaller charge and no mass.

Nuclear Decay with β particles Mass number remains the same (proton switches with a neutron) Atomic number increases by one. (proton formed in nucleus; stable daughter isotope).

Nuclear Decay: Gamma Gamma Rays( ϒ ) = high energy particle with no mass or charge. Does not have a charge or mass, therefore travels and penetrates the farthest. Most dangerous rays because penetrates skin. Usually emitted with alpha and beta particles. parent decays α + daughter isotope + ϒ isotope particle (stable) (unstable) (He nucleus) +ϒ+ϒ

Nuclear Decay with ϒ rays Mass number remains the same ( ϒ rays has no mass) Atomic number remains the same ( ϒ rays has no mass or charge)

Periodic Table Who organized the periodic table based on atomic mass?

Periodic Table Who organized the periodic table based on atomic number?

Periodic Table How is the modern periodic table Organized?

Periodic Table What is another name for rows on the periodic table?

Periodic Table What is another name for the columns on the periodic table?

Periodic Table Give me an example of a metal, non- metal, and a metalloid

Periodic Table What is the difference between transitional and representative groups?