Properties of Matter
Classification of Matter
Atomic Structure
Electrons and Periodic Table
Miscellaneous
100

What tools and units are used to measure:

Length
Mass
Volume

Length - Ruler/meter stick, cm or m
Mass - Balance, g or kg
Volume - Graduated cylinder, L or mL

100

What type of element is Potassium? 

Metal 

100

The three subatomic particles and their charge

Protons (+), Electrons (-), Neutrons (0) 

100

What two factors affect coulombic attraction between protons and electrons? 

Distance, and number of protons

100

The first thing you should do if: there's a spill/broken glass/fire/mistake during a lab

Tell Ms Hosek
200

What are characteristics of solids, liquids and gasses? 

Solids - particles are close, definite shape/volume

Liquids - particles are more spaced out, no definite shape, definite volume

Gasses - particles are far apart, no definite shape or volume

200

What are some properties of nonmetals? 

brittle, dull, non-conductive, many are gasses at room temp

200

Atoms of the same element with different number of neutrons

Isotopes

200

How many valence electrons does Phosphorous have? 

5

200

What are two of Ms Hosek's favorite animals?

Sharks, octopuses, whales, elephants 

300

Is the following a chemical or physical change? How do you know?

Magnesium chloride (MgCl2) dissolves in water (H2O) to form magnesium chloride solution (MgCl2 & H2O)

Physical. No bonds were broken (chemical formulas did not change) and dissolving is fairly easily reversible

300

Element, Compound, or Mixture (and explain)

caffeine, C8H10N4O2

compound - multiple types of atoms of atoms bonded together

300

What information is in an atomic symbol? 

            bc Ad

      bc Ad.        A -Element Symbol

                    B - Atomic Number (p)

                    C - Mass Number (p + n)
                    D - Charge (p & e) 

300

Identify this element: 

1s22s22p63s23p64s23d104p1

Gallium (Ga) 

300

Describe the grading/retake policy of chemistry

20% formative (HW, some projects)
80% summative (quizzes, some projects)

You can retake a quiz if you've completed the homework and demonstrated re-learning

400

What are four indications that a chemical change has occurred? 

Production of a gas (bubbles) or light, change in color, smell, temperature, formation of a precipitate

400

Element, Compound, or Mixture (and explain) 

bronze, Cu & Sn

Mixture. Copper and Tin are not chemically bonded, but mixed to form the alloy bronze

400

What is the charge of the following atom:

Atomic Number - 18
Neutrons - 20
Mass Number  - 38
Electrons - 17

+1 (18 p+, 17 e-) 

400

Why does atomic radius decrease as you go across a period? 

More protons = more coulombic attraction = tighter pull 

400

Name and describe 4 pieces of safety equipment in this classroom

(answers may vary) 

500

If a substance has a density of 0.5 g/mL and a mass of 20 g, what is its volume? 

40 mL

D = M/V

500

What is happening on a molecular level during a chemical change? 

chemical bonds are breaking/forming between atoms

500

What is the difference of mass number and average atomic mass? 

mass number: p + n (refers to a specific atom) 

average atomic mass: average mass of atoms based on the the relative abundance of the isotope (number on the periodic table)

500

What is ionization energy, and why does it decrease as you go down a group? 

The energy needed to remove an electron from an atom (forming an ion). As you go down a group, the Idecreases because the valence electrons are far from the nucleus

500

What country did Ms Hosek travel to last year?

Kingdom of Tonga

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