Chemistry, 29.01.2021 08:10 pdipti725

#1 – Intro to Chemistry 1 Describe the contributions of alchemy to the development of chemistry

2 Describe the contributions of Lavoisier to the development of chemistry

3 List the Steps(define) to the scientific method

4 Know the different types of Chemistry

# 2- Matter and Change

1 Describe some intensive and extensive properties of matter.

2 What are the 3 states of matter and describe

3 How can mixtures be classified?

4 Distinguish between elements and compounds.

5 Distinguish between a pure substance and a mixture.

6 What are four clues that a chemical change has occurred?

7 During a chemical reaction, the mass of the products us always to the mass of the .

# 3- Scientific Measurement

1 How do measurements relate to science?

2 Distinguish between accuracy and precision.

3 How do you calculate percent error?

4 Review metric system and SI/units. (HINT: how do you remember the Metric Order?)

5 How do you convert between degrees Celsius and Kelvin?

6 Calculate density in a given problem.

7 Scientific Notation

8 Significant figures (Addition and Subtraction/ Multiple and Division rules)

# 4- Atomic Structure

1 Describe the main characteristics of the following atomic models

Democritus Model

Dalton Atomic Theory

Thomson “Plum Pudding” Atomic Model

Rutherford Nuclear Model

2 List the main statements or principles of Daltons’s Atomic Theory

3 Describe several ways in which the Democritus and Dalton Model are different from each other.

4 Describe the range in size of atoms.

5 Which subatomic particle did JJ Thomson discover?

6 Describe the gold foil experiment which Ernest Rutherford used to develop the Rutherford Nuclear Model of the atom.

7 What were the main conclusions Rutherford reached about the atom after doing the gold foil experiment?

8 Describe the contributions of the following scientists to the atomic theory:

Democritus

John Dalton

JJ Thomson

Robert Millikan

Ernest Rutherford

9 Describe the main characteristics of subatomic particles (3) including symbol, location, relative charge and mass.

10 Describe how to determine the number of protons, electrons, and neutrons are within an atom when the atomic number and mass of an atom is given

11 What is the formula to determine the number of neutrons within an atom.

12 What is an isotopes? Describe the two notations which are used to denote isotopes of an element.

13 Describe how to calculate the atomic mass of an element.

# 5 – Electrons and Electromagnetic Spectrum

1 What is an atomic orbital? How many orbitals are in the 2p sublevel?

2 Describe the three rules that govern the filling of atomic orbitals

3 How many sublevels are contained in each of these principal energy levels? a. n=1. b. n=2 c. n=3 d. n=4

4 Arrange the following sublevels in order of increading energy: 3d , 2s, 4s, 3p

5 Write the electron configurations for these elements a. Na. b. S. c. K

6 List the colors of the visible spectrum in order of increasing wave length.

7 What is meant by the frequency of a wave? What are the units of frequency? Describe the relationship between frequency (v) and Wavelength (λ).

8 State the Heisenberg uncertainty principle

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#1 – Intro to Chemistry 1 Describe the contributions of alchemy to the development of chemistry

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