Ch 1 The Science of Chemistry

Ch 2 Matter and Energy

Ch 3 part I Atoms and Moles

Ch 3 part II Atoms and Moles

Ch 4 The Periodic Table

Ch 5 Ionic Compounds

$100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500 $100 $200 $300 $400 $500

In an exothermic reaction, heat is _____. In an endothermic reaction, heat is ____.

In an exothermic reaction, heat is released. In an endothermic reaction, heat is absorbed.

How many sig figs? a b c d. 430

a b c d

The density of copper is 8.94g/mL. In the lab, a student found the density to be 7.99g.mL. What is the percent error?

True – Exp x 100 True (8.94g/mL – 7.99g/mL) x g/mL =10.6%

C 60 the buckyballdiamond The following are examples of ________.

Allotropes of an element. More than one of the same element chemically bonded.

Choose pure substance or mixture for each statement: 1. Can be physically separated? 2. Is one type of atom or molecule ? 3. Has variable composition? 4. Has properties similar to it’s individual components?

1.Can be physically separated? M 2. Is one type of atom or molecule ? PS 3. Has variable composition? M 4. Has properties similar to it’s individual components? M

Give an 2 examples of derived units

g/mL cm 3 m/s

Fill in the unit or quantity: grams: _____ cm 3 : _____ _____: density

grams: mass cm 3 : volume g/mL: density

Orange and fuzzy is a qua_ _ _ _ _ _ _ _ description.

Orange and fuzzy is a qualitative description ( not quantitative).

Scientists are supposed to write subjectively. What does that mean?

They should leave out personal bias or opinions.

Find the measurement of the two graduated cylinders to the correct number of decimal places.

30.0mL 4.27mL

Name the 7 families on the periodic table in order from left to right & top to bottom.

alkali metals, alkali-earth, transitions, halogens, noble gases, lanthanides, actinides

Match the scientist to his discovery: 1) Bohra) electron 2) Thomsonb) nucleus 3) Rutherfordc) orbits

1c Bohr/orbits 2a Thomson/e - 3b Rutherford/nucleus

Calculate the mass of one mole of Fe 2 O 3.

159.70g/mol

Match the scientist to his experimentation of the atomic theory. 1) Bohra) light 2) Thomsonb) Gold-foil 3) Rutherfordc) Cathode Ray Tube

1a Bohr/light 2c Thomson/Cathode Ray 3b Rutherford/Gold Foil

Explain Bohr’s theory on how light is emitted.

When an electron gains energy it moves further from the nucleus to a higher energy level, it then falls back down emitted that energy as light.

The atom is made of a very dense ______ and a very spacious ______ ____.

The atom is made of a very dense nucleus and a very spacious electron cloud.

Which element serves as the standard that the amu was created from.

The carbon-12 isotope.

How many moles of carbon are in 330g C? Show work on board.

27mol C

How many proton, neutrons, and electrons does the Ni +2 ion have? It’s mass number is 58.

28 p + 30 n 26 e -

Name 3 characteristics of a making a good graph.

1.Use the most available space so it’s easier to read and estimate. 2. Label axes and units(if needed) 3. Good descriptive title 4. Equal increments on the axes

Atoms in the same group have the same ________ _______.

Valence electrons

If an unknown’s atoms have low electronegativity and delocalized electrons, it is held together by ________ bonds.

Metallic bonds

Ch 5 question: Pick two specific elements that would fit into this formula: X 3 Y

Any cation from group 1. Any anion from group 15. Example: Na + 3 P -3

On the periodic table, where are the most reactive metals and the most reactive nonmetals?

The alkali metals and the halogens.

Match the vocab with the correct trend. 1. Ionization energy 2. Atomic radius 3. Electron affinity a. highest at top right b. highest at bottom left

1a I.E.- top right 2b size- bottom left 3a E.A.- top right

Which family tends to have a +2 charge?

Alkaline-Earth Metals

Which noble gas is the sulfur ion isoelectronic with?

Argon; sulfur gains two electrons and will have 18 e -

If an unknown solid is brittle, has a very high melting point, strong bonds, and localized electrons, it is a ________. (one or two words will work)

salt; ionic compound

Electroneutrality is when there are equal numbers of _____ and ______ charges

Electroneutrality is when there are equal numbers of positive and negative charges

How many ions are there in Sr 3 (PO 4 ) 2 ?

5 Three cations and two anions

$200 $400 $600 $800 $1000 $200 $400 $600 $800 $1000 $200 $400 $600 $800 $1000 $200 $400 $600 $800 $1000 $200 $400 $600 $800 $1000 $200 $400 $600 $800 $1000