Intro to Chemistry Packet 2012 - Mrs. Last's...

This packet is intended to

be roughly 80% review

based on your prior

knowledge that you have

gained from previous

science classes. All of this

material is essential to

know so we can move onto

actual Chemistry concepts.

Chemistry will be extremely

difficult if you do not grasp

and memorize the concepts

in this intro packet. These

concepts are intertwined in

more complex ideas and

are used throughout the

entire year!

1. Classification of Matter

Fill in the flowchart below using the vocabulary words that are used when classifying different

2. Place the letters of the mixtures below on either the homogeneous or heterogeneous lines

a. Gelatin dessert b. d. Topping on a pizza e. g. Milk h.

Homogeneous Mixtures____________________ H

3. Classify each of the pictures below by placing the correct label(s) in the blanks below:

PE – Pure Element

PC – Pure Compound

YYeess

Classification of Matter


types of matter.

Place the letters of the mixtures below on either the homogeneous or heterogeneous lines

Tea c. Concrete

Toothpaste f. Creamy peanut butter

Taco i. Chunky peanut butter

Mixtures____________________ Heterogeneous Mixtures _______________________

Classify each of the pictures below by placing the correct label(s) in the blanks below:

Pure Element

Pure Compound

HET – Heterogeneous Mixture

HOM – Homogeneous Mixture

Matter

Can it be separated?

Is the Composition uniform?

Can it be decomposed by ordinary chemical means?

YYeess NNoo

NNoo YYeess


Creamy peanut butter Chunky peanut butter

_______________________

Can it be decomposed by ordinary chemical means?

NNoo

((NNaammee))

__________

((HHoouurr))

Initials

4. Identify whether each of the following changes is a physical

change or a chemical change. Write a “P” on the line for a

physical change and a “C” for a chemical change.

a. _______ Water boiling

b. _______ Iron rusting

c. _______ Butter melting

d. _______ Alcohol evaporating

e. _______ Wood rotting

f. _______ Leaves changing color

g. _______ Glass breaking

h. _______ Mowing the lawn

i. _______ Baking bread

6. Indicate whether each of the following is an

___ Length ___ Texture

___ Boiling Point ___ Size

___ Mass ___ Volume

___ Density ___ Freezing Point

7. Indicate whether each of the following is a Ho

___ copper penny ___ bean burrito

___ diamond ___ plastic wrap

___ blood ___ cappuccino

___ apple juice ___ milk

___ baked potato ___ chocolate pudding

___ sponge ___ soda pop

8. Indicate whether each of the following is a

___ grinding coffee beans ___ soda pop losing its fizz

___ freezing water ___ rain turning into hail

___ rubber melting ___ baking a cake

9. Indicate whether each of the following is

___ SO2 ___ S

___ CH4 ___ H

___ O3 ___ Co

10. Indicate whether each of the following is an E

___ warming of soup ___ solid subliming to a

___ frost forming ___ running an engine

Identify whether each of the following changes is a physical

on the line for a

for a chemical change.

5. Convert the following temperature

a. 40 oC → __________K

b. -5 oC → __________K

c. 220 K → __________

d. 498 K → __________

e. 56.8 oC → __________K

f. -61 oC → __________K

g. 350 K → __________

h. 14 oC → __________

i. 78 oF → __________

j. 89.5 oF → __________K

k. 27 oC → __________

l. -12 oF → __________K

m. 4 oC → __________

Indicate whether each of the following is an Extensive or Intensive property.

___ Texture ___ Malleability

___ Size ___ Height

___ Volume ___ Area

___ Freezing Point ___ Conductivity

Indicate whether each of the following is a HoMogeneous or HeTerogeneous mixture

___ bean burrito ___ paint

___ plastic wrap ___ sea water

___ cappuccino ___ orange juice

___ milk ___ silverware

___ chocolate pudding ___ key lime pie

___ soda pop ___ chunky peanut butter

Indicate whether each of the following is a Physical or Chemical reaction.

___ soda pop losing its fizz ___ frying an egg

___ rain turning into hail ___ firework exploding

___ baking a cake ___ digesting spaghetti

Indicate whether each of the following is an Element or a Compound.

___ S8 ___ C60

___ H2O ___ C6H12O6

___ Co ___ NaCl

Indicate whether each of the following is an EXothermic or ENdothermic change

___ solid subliming to a gas ___ ice melting in March

___ running an engine ___ evaporating perspiration

Convert the following temperatures

__________K

__________K

__________ oC

__________ oC

__________K

__________K

__________ oC

__________ oF

__________ oC

__________K

__________ oF

__________K

__________ oF

___ chunky peanut butter

___ firework exploding

___ digesting spaghetti

___ ice melting in March

___ evaporating perspiration

Initials

11. Measurements

12. Metric Conversions

a. 7.65 mm = __________________m

b. 0.34 km = _________________cm

c. 1.2 L = __________________mL

d. 7.8 pm = __________________nm

e. 9.73 ks = __________________ µs

f. 564 ML = _____________________L

g. 65 ms = _____________________ ds

h. 4.14 pg = ___________________ µg

i. 145 ms = ____________________ ps

j. 1 kg = ______________________ g

k. 4.89 µL = ___________________ dL

l. 235.9 ks = ___________________ cs

m. 12.1 s = _____________________ ms

n. 5,870 m = ___________________ Mm

o. 0.00089 ng = _________________ Gg

p. 64.7 cm = ___________________ pm

q. 500,400 kg = _________________ µg

r. 320 MJ = ____________________ kJ

s. 12.3 Pa = ____________________ kPa

t. 400,890 mL = ________________ ML

u. 58.4 g = _____________________ mg

v. 2.67 ks = ____________________ ps

w. 945 GL = ____________________ cL

x. 4.1 kJ = _____________________ J

y. 7.4 g = ______________________ dg

z. 1.8 µs = ______________________ ms

0

Initials

13. Significant figures and Scientific Notation

# # of

Sig Figs Scientific Notation #

# of

Sig Figs Scientific Notation

a. 3400 s b. 3.40000067 s

c. 0.0789 m d. 9.0797430030 L

e. 50067 m f. 45290300 m

g. 0.0000023 m h. 4500.00 g

i. 1.2000 s j. 0.00000000340 g

k. 10 L l. 0.02102 m

m. 100 g n. 890000. Pa

o. 100. L p. 9.000000 x 1011 m

q. 100.0 s r. 1.0 x 103 L

s. 100.00 g t. 3.9560 x 10-5 s

u. 0.0900000 m v. 3.412 x 10-4 Pa

w. 34.0 g x. 4.755 x 108 g

y. 6000006 m z. 5.60 x 10-6 L

14. Accuracy vs. Precision

Four lab groups performed the same experiment three times to determine the melting point of naphthalene (moth balls). The

accepted melting point is 79.0°C. Indicate whether the following sets of data are precise, accurate, both or neither.

(Hint: Taking an average of the data will help you determine if you were accurate or not!)

Precise, Accurate, Both or Neither Group Trial 1 Trial 2 Trial 3

a) 1 76.2 oC 79.5

oC 81.3

oC

b) 2 76.2 oC 76.1

oC 76.3

oC

c) 3 86.4 oC 82.8

oC 81.2

oC

d) 4 79.1 oC 78.9

oC 79.2

oC

15. Percent Error

a. John uses his thermometer and finds the boiling point of ethyl alcohol to be

75.5oC. He looks in a reference book and discovers that the actual boiling

point of ethyl alcohol is 78.3oC. What is the percent error?

b. Barry Um receives a laboratory report back with a “+2.77% error” written on it. He had found the mass

of an object to be 100.30 grams. What is the actual mass of the object?

c. The density of water at 4oC is known to be 1.00 g/cm3. Kim experimentally found the density of water

to be 1.085 g/cm3. What is her percent error?

Initials

d. After lab, all of Henry’s friends looked at his data and laughed and laughed! They finally told him that he

was 31.2% too low in the boiling point

is the correct boiling point of his liquid?

16. Sig Figs & Math

From the equations below, provide the calculator answer and then the appropriate sig fig answer

a. 6.25 * 4.75

b. 12.257 * 1.162 * 0.00254

c. 52.4 * 78.4 * 1200

d. 12000/56.2

e. 2.1/0.02565

f. 3.95 + 2.879 + 213.6

g. 1500 + 45.21 + 6.2

h. 15600 – 54 – 565

i. 25620 - 25.50 - 4.65

j. 25 + 1.50 + 50

17. Dimension Analysis (Converting)

Using T-Charts, convert the following. Make sure to include all

a. How many dozen are there if you have 540 bagels?

c. How many bagels do you have if you have 18,000 dozen

bagels?

e. How many seconds are there in 24,570 minutes?

g. How many cups are in 28,796 tablespoons?

Initials

After lab, all of Henry’s friends looked at his data and laughed and laughed! They finally told him that he

was 31.2% too low in the boiling point he had recorded. He had recorded 50oC on his data sheet. What

is the correct boiling point of his liquid?


Multiplication/Division

Calculator Answer Significant Figure Answer

Addition/Subtraction

Calculator Answer Significant Figure Answer

Charts, convert the following. Make sure to include all values AND UNITS

How many dozen are there if you have 540 bagels? b. How many tablespoons are in 25 cups?

How many bagels do you have if you have 18,000 dozen d. How many reams of paper are there if you have 3,250

pieces of paper?

seconds are there in 24,570 minutes? f. How many mL are there in 348 cups?

How many cups are in 28,796 tablespoons? h. How many cups are there in 430 mL?

After lab, all of Henry’s friends looked at his data and laughed and laughed! They finally told him that he

C on his data sheet. What


Significant Figure Answer

Significant Figure Answer

How many tablespoons are in 25 cups?

How many reams of paper are there if you have 3,250

How many mL are there in 348 cups?

How many cups are there in 430 mL?

Useful Conversions

1 ream = 500

1 Cup = 16 Tbl

1 Cup = 240 mL

1 mile = 5280 ft

i. How many hours are there in 560 minutes?

k. How many feet are there in a marathon that is 26.2 miles

long?

m. How many tablespoons are there in 3,490 mL?

You must use the formal method of dimensional analysis as taught in this class in order to get credit for these

solutions.

n. Every three times I clean my bedroom; my mother makes me an apple pie. I cleaned my bedroom 9 times. How many

apple pies does she owe me? (What? Your mother doesn't reward you for cleaning your bedroom? To make up for that

in justice, I made this problem easy.)

o. A chemistry teacher working at a golf camp during the summer found a liquid, which when she drank it, caused her to

slice ball after ball into the water. She thought that this was an important liquid to identify so she set out to determine

its density. She found that a sample of the liquid had a mass equal to 455 golf balls and occupied a volume of 620 water

cups that she obtained at the 7th

hole. Each golf ball massed 50 g and the water cups at the 7

held 45 mL each. What is the density of the unknown liquid? (D = g/mL)

p. A Pulaski High School senior was applying to college and wondered how ma

counselor explained that with the excellent grade he received in chemistry he would probably be accepted to one

school out of every three to which he applied. [

application he would have to write 3 essays, [

essay = 2 hours]. Of course writing essays is no simple matter. For each hour of serious essay writing, he would need to

expend 500 calories [1 hour = 500 calories

How many times would he have to clean his room in order to gain acceptance to 10 colleges? Hopefully you didn't skip

problem No 1. I'll help you get started.... 10 acceptances is the “given”.

q. Because you never learned dimensional analysis, you have been working at a fast food restaurant for the past 35 years

wrapping hamburgers. Each hour you wrap 184 hamburgers. You work 8 hours per day. You work 5 days a week.

get paid every 2 weeks with a salary of $840.34. How many hamburgers will you have to wrap to make your first one

million dollars

How many hours are there in 560 minutes? j. How many pieces of paper are there in 5,250 reams?

feet are there in a marathon that is 26.2 miles l. How many seconds are there in the month of May?

How many tablespoons are there in 3,490 mL?


Every three times I clean my bedroom; my mother makes me an apple pie. I cleaned my bedroom 9 times. How many

owe me? (What? Your mother doesn't reward you for cleaning your bedroom? To make up for that

justice, I made this problem easy.)

A chemistry teacher working at a golf camp during the summer found a liquid, which when she drank it, caused her to

ice ball after ball into the water. She thought that this was an important liquid to identify so she set out to determine


hole. Each golf ball massed 50 g and the water cups at the 7

held 45 mL each. What is the density of the unknown liquid? (D = g/mL)

A Pulaski High School senior was applying to college and wondered how many applications he needed to send. His


school out of every three to which he applied. [3 applications = 1 acceptance] He immediately realized th

application he would have to write 3 essays, [1 application = 3 essays] and each essay would require 2 hours work

]. Of course writing essays is no simple matter. For each hour of serious essay writing, he would need to

1 hour = 500 calories] which he could derive from his mother's apple pies [1 pie = 1000 calories].


you get started.... 10 acceptances is the “given”.

Because you never learned dimensional analysis, you have been working at a fast food restaurant for the past 35 years

wrapping hamburgers. Each hour you wrap 184 hamburgers. You work 8 hours per day. You work 5 days a week.

a salary of $840.34. How many hamburgers will you have to wrap to make your first one

How many pieces of paper are there in 5,250 reams?

How many seconds are there in the month of May?


Every three times I clean my bedroom; my mother makes me an apple pie. I cleaned my bedroom 9 times. How many

owe me? (What? Your mother doesn't reward you for cleaning your bedroom? To make up for that

A chemistry teacher working at a golf camp during the summer found a liquid, which when she drank it, caused her to

ice ball after ball into the water. She thought that this was an important liquid to identify so she set out to determine


hole. Each golf ball massed 50 g and the water cups at the 7th

hole of the golf course

ny applications he needed to send. His


] He immediately realized that for each

] and each essay would require 2 hours work [1

]. Of course writing essays is no simple matter. For each hour of serious essay writing, he would need to

] which he could derive from his mother's apple pies [1 pie = 1000 calories].


Because you never learned dimensional analysis, you have been working at a fast food restaurant for the past 35 years

wrapping hamburgers. Each hour you wrap 184 hamburgers. You work 8 hours per day. You work 5 days a week. You

a salary of $840.34. How many hamburgers will you have to wrap to make your first one

Initials

Intro to Chemistry Packet 2012 - Mrs. Last's...

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