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Topic 2, 3, & 11 Review

Unit 1 Test

How do you determine the number of protons, neutrons, and electrons from isotope notation?

What is the same for an atom of phosphorus-26 and an atom of phosphorus-27?

How many protons, neutrons, and electrons are in: 2H, 11B, 16O-2, 19F-

Atomic Basics

What is an isotope? What do isotopes have in common and

what is different? State two physical properties other than

boiling point and melting point that would differ for the 2 isotopes of chlorine.

Isotopes

Carbon-14 – carbon dating Cobalt-60 –radiotherapy to treat cancer

and other diseases – knocks off e- to make it impossible for cancerous cells to grow

Iodine-131 – medical tracer (thyroids)

Radioisotopes

Find the average atomic mass of Carbon if the 3 isotopes are as follows: C-12 85%, C-13 5%, C-14 10%

What is the relative abundance of each neon isotope if the two isotopes are Ne-20 and Ne-22?

Average Atomic Mass

Draw and label and picture of the mass spec.

Explain how the mass spectrometer helps you determine the average atomic mass of elements.

Which ion would be deflected the most? 35Cl+, 37Cl+, 37Cl2+

Mass Spectrometer

What is the electron configuration, Nobel gas configuration, and electron arrangement for:

W, Ag, Br, Mg, U, O

How many energy levels are occupied when silicon is in its ground state?

Give two oppositely charged ions which have the same electron configuration as argon.

Electrons

How are electrons related to light? What is the difference between

continuous and line emission spectra? Why can the line emission spectra be

considered ”spectral fingerprints” for elements?

Electrons & Light

How do you determine the uncertainty for the final answer in the following situations:

Find the temperature difference between 25.0 ˚C and 23.6˚C

What is the density for a liquid with a volume of 25.00mL and a mass of 26.4g?

Uncertainty

What are the readings?

mLLcm

mLLcm

cmcm

Addition/ Subtraction : add uncertainties together

Multiplication/Division: Convert to % (divide by data number *100%) Add % Convert back to absolute (divide by 100 and

* by data number)

Math with Uncertainty

How many sig figs will be in the difference between 11.6235 and 10.5805g?

How many sig figs will be in the density of an object with a mass of 1.625g and a volume of 1.1cm3?

Significant Figures

If a student measure the volume of water incorrectly by reading the top instead of bottom of meniscus, what will be affected?

What is the difference between systematic and random errors?

Which type of errors can cancel when differences in quantities are calculated?

Errors

Be able to: ID metals, nonmetals, metalloids Discuss properties of each major

grouping Know Properties of Group 1, 7,0

and Period 3 Explanations behind all trends

Periodic Table

Rank the following (and their ions) in order from largest to smallest: Na, Mg, Cl

Which has the largest ionization energy and why? Calcium or Potassium?

Which is more electronegative and why? Sulfur or chlorine?

PT Practice

Find the relative abundance of the isotopes of Magnesium if the 3 isotopes are Mg-24, Mg-25, and Mg-26. The percent abundance of Mg-26 is 11.17%.