Study guides, Class notes & Summaries

What is the SCIENTIFIC METHOD? Correct Answer-Is a step by step procedure to provide consistency when doing research What are the steps of the SCIENTIFIC METHOD Correct Answer-1. Ask a Q 2. Get more Information 3. Propose an Explanation 4. Test w/ Experiments 5. Analyze experimental findings 6. If your orginal is untrue, propsose alternative explanation. Qualitative data Correct Answer-Data Consisting general observations Quantitative data Correct Answer-Date consisting of various ...

Two characteristics of Matter Correct Answer-Mass and Volume Scales of Matter Correct Answer-1. Macroscopic 2. Microscopic 3. Particulate Physical Property Correct Answer-When an atom or molecule doesn't change -color, taste, melting and boiling point, odor, density Chemical Property Correct Answer-When the atom or molecules react and the composition of matter changes -flammability, acidity, oxidation, corrosiveness Dalton's Atomic Theory Correct Answer-1. each element is made...

Which of the following pieces of equipment is not used in the experiment to measure the relationship between pressure and volume? Correct Answer-an Erlenmeyer flask Which of the following statements is/are true? 1.Gases are easily compressed compared to other states of matter. 2.Gases expand to fill the volume of their container. 3.All gases that exist in real life are considered to be ideal gases. 4.Molecules of different gases readily mix with one another. Correct Answer-1,2, and 4 I...

Define Calorimetry Correct Answer-Determining the changes in energy of a system by measuring the heat exchanged with the surroundings Know how to calculate amount of energy released using E=mc(delta)T Correct Answer-E=energy, m=mass, c=specific heat, (delta T)=change in temp What is meant by a small calorie "c" and a food calorie "C"? Correct Answer-c=1 calorie=4.184 J, C=1000 little calories=4184 J When walking, an average person burns .453 C/(mile*pounds). How many C does a 150-po...

Thermodynamics Correct Answer-the study of energy and its transformations potential energy Correct Answer-energy stored due to an object's position or arrangement kinetic energy Correct Answer-the energy an object has due to its motion Transfer of energy Correct Answer-occurs when one object gives some or all of its energy to another object. Appears as work (force w) or heat (friction q) Define the surroundings and system Correct Answer-system--> part we focus one surr.--> ...

Scientific Notation 6.2*10^4= Correct Answer-62,000 1 Liter=___mL Correct Answer-1000 mL 1 meter=___km Correct Answer-0.001km 1gram=___kg Correct Answer-0.001kg Density= Correct Answer-mass/volume Kelvin= Correct Answer-C+273 Valence Electrons Neutral= Correct Answer-group # Valence Electrons Charged= Correct Answer-(group#)-(charge) pure substance (example) Correct Answer-water, sugar, ethanol

Know your significant figure rules Correct Answer-ALL zeroes between non-zero numbers are ALWAYS significant. ALL zeroes which are SIMULTANEOUSLY to the right of the decimal point AND at the end of the number are ALWAYS significant. ALL zeroes which are to the left of a written decimal point and are in a number >= 10 are ALWAYS significant. define calorimetry Correct Answer-the act of measuring heat required or evolved during a chemical process know how to calculate the amount of ener...

sig fig zeros Correct Answer-1. zeros at beginning NOT signif 2. zeros between ARE SIGNIF 3. zeros at end of number are signif if number contains a decimal point 3.489 x (5.67-2.3) Correct Answer-3.489 x 3.(3)7 11.75793 12 matter Correct Answer-composed of mass and must occupy space scales of matter Correct Answer-macroscopic, microscopic, particulate. scientists think on a particulate scale, observe macroscopically states of matter Correct Answer-1. change from solid to liquid t...

EXAM 1 Correct Answer- As part of the calibration of a new laboratory balance, a 1.000 g mass is weighed with the following results: Trial 1: 1.201 +/- 0.001 Trial 2: 1.202 +/- 0.001 Trial 3: 1.200 +/- 0.001 The balance is: Correct Answer-Precise but inaccurate ______ are substances with constant composition that can be broken down into elements by chemical processes. Correct Answer-compounds Which of the following is not a unit in the SI system? Correct Answer-calorie A species ...

what determines the chemical properties of atoms/molecules? Correct Answer-# of protons how element is bonded//what it's bonded to Celsius + x = Kelvin. What value is x? Correct Answer-273 atomic number is Correct Answer-number of protons Coulomb's Law Correct Answer- acids Correct Answer-hydrogen containing substances that react with water to produce a hydrated hydrogen ion bases Correct Answer-produce OH⁻ ions when dissolved in water Carboxylic acids Correct Answer-compo...