Chemistry EOG Review

Tiny Little Particles

100

This is a positively charged particle in an atom

Proton

200

This particle has a negative charge

Electron

300

How many protons, neutrons, and electrons are found in aluminum?

13 protons, 14 neutrons, and 13 electrons.

400

How many atoms are in this chemical formula?

Ca₃(PO₄)₂

13 

Ca = 3 

P = 2 

O = 8 

500

How many atoms are in this chemical formula?

3(NH₄)₃PO₄

60

I'm Going Through Changes

100

This is a type of change where the particles are only moved around 

Physical change

200

This type of change usually requires a chemical reaction and the formation of a new substance

Chemical change

300

Mr. Stafford gets mad and rips up a bunch of paper and throws it in the air. What kind of change is occurring in the paper?

Physical

400

Physical, Chemical, or both? 

Iron reacts with oxygen and moisture to form iron oxide

Chemical

500

Mrs. Robinson lights a candle 

Chemical or physical or both? 

Both. 

Chemical - burning the wick 

Physical - the wax melting

Sir Mix A Lot

100

Salt water -- homogeneous or heterogeneous?

Homogeneous

200

orange juice with pulp is a ____________ mixture. 

heterogeneous

300

Air -- is it a mixture or a compound? 

200 Extra points if you can tell me ....

Mixture 

What kind of mixture? 

400

Granite countertops are a _______________ mixture. 

Heterogeneous

500

Mrs. Walker is putting sugar into her coffee. If coffee is the solution, sugar is the ______________ . 

Solvent

Balancing Act

100

What does the Law of Conservation state?

Energy/mass cannot be created or destroyed only transformed or transferred.

200

Kross is cooking mac n cheese. There are 50g of ingredients when he begins making dinner. How many grams of ingredients will there be once he is done cooking?

50g

300

Balance this chemical equation: 

Na +O₂  ---> Na₂O

4Na + O₂ ----> 2Na₂O

400

Balance the following chemical equation: 

C + SO₂ ---> CS₂ + CO

5 C+2 SO₂ ---> CS₂+ 4 CO 

500

Balance the following chemical equations: 

Rb + S₈ ----> Rb₂S

16 Rb + S₈ ----> 8 Rb₂S

Vocab and Other Stuff

100

This is the smallest, indivisible unit of matter

Atom

200

This is the combination of 2 or more elements that have been chemically combined in a fixed ratio to form a new substance 

Compound

300

In the chemical formula 2H₂O, what is the term for the two in the front of the formula and the term for the 2 in the middle of the formula? 

Coefficient, subscript

400

This particle lives in the outermost shell of an atom

Valence Electron

500

Following his discovery, he proposed an atomic model suggesting that atoms were positively charged spheres with negatively charged electrons embedded within them, likened to plums in a pudding.

JJ Thomson