Gvy P. Barroga
11-STEM-A
Lesson 1 : Activities
A. Identify the state of matter of each item. Write S on each blank if it is solid, L if liquid, and
G if gas.
1. S
6. L
2. G
7. G
3. S
8. S
4. G
9. L
5. L
10. G
B. Answer the following.
1. Enumerate the three states of matter.
a. Solid
b. Liquid
c. Gas
2. Describe the states of matter.
Solid
a. Strong intermolecular forces.
b. Definite mass, volume, and shape.
c. Particles vibrate around fixed axes
Liquid
a. Liquid has no definite shape
b. Liquid has definite volume
c. Particles are free to move over each other, but are still attracted to each other.
Gas
a. They are easy to compress
b. They expand to fill their containers.
c. occupy far more space than the liquids or solid from which they form.
3. Give five examples of each state of matter. Do not include those that have already been
mentioned in the lesson.
Solid
a. Speaker
b. Calculators
c. Wood
d. Cement
e. Book
Liquid
a. Honey
b. Urine
c. Blood
d. Gasoline
e. Oil
Gas
a. Fluorine
b. Neon
c. Carbon Dioxide
d. Water Vapour
e. Chlorine
Lesson 2 : Activities
Tell whether the following refers to an intensive or extensive property and write the
reason/evidence why you consider it as such.
Extensive property
-
Mass and weight: As earth's gravity is about six times stronger than that of moon,
therefore, a person's weight on moon is less than his weight on the earth. Extensive
properties vary with the amount of the substance and include mass, weight, and
volume.
Extensive property
-
8. The hardness of the diamond.
It is an intensive property because no matter how big or small the diamond is its
hardness will always be 10 in Mohs hardness scale.
Extensive property
-
7. The number of wires connected to an outlet.
The number of wires connected to an outlet is an intensive property because an
intensive property is a property of matter that depends only on the type of matter in a
sample and not on the amount.
Intensive property
-
6. The calories you consumed when you eat a cup of rice.
The calories you consumed when you eat a cup of rice is an extensive property because
the calories depends on the volume of rice you consumed.
Intensive property
-
5. The amount of dishwashing liquid used to clean dishes.
Mass and volume are examples of extensive properties. The amount of dishwashing liquid used
to clean dishes is an extensive property because the greater the amount of dishes to be cleaned
the greater the volume of dishwashing liquid needed.
Extensive property
-
4. The pressure exerted by the cooker when boiling meat.
The pressure exerted by the cooker when boiling meat is an intensive property because
pressure does not depend upon the amount of substance because it is defined as force
per unit area. The definition itself eliminates the need of looking for how much of
quantity is causing that much pressure.
Extensive property
-
3. The temperature of boiling water.
The water must reach 100 degrees Celsius in order for the water to start boiling. So the boiling
point is an intensive property. Likewise, melting point is also an intensive property. Other
examples of intensive properties include density, solubility, color, luster, freezing point and
malleability.
Intensive property
-
2. The mass of powdered milk in your glass of milk.
-Since mass is dependent on the amount of matter being weighed, the mass of
powdered milk in the glass of milk is an extensive property. An object's mass is a
measurement of the amount of matter it holds.
Intensive property
-
1. Your weight on the moon.
9. The amount of salt in solution.
It is an extensive property because the amount of salt depends on the volume of salt in
the solution.
Extensive property
-
10. The concentration of a perfume used to spray the body.
It is an extensive property because the concentration of a perfume varies depending on
the perfume you used to spray the body.
Types of Chemical Changes
Indicate the type of chemical change that occurs in the following equation. Use the answer
code indicated:
A - direct union or combination
B - decomposition or analysis
C - substitution / single replacement
Equation
Number
1
2
3
4
5
6
7
8
9
10
Chemical Reaction
Types of Chemical Change/
Reaction
Mg + HCI
MgCI2 + H2
KCIO3
KCI + O2
H2 O
H2 + O2
AgNO3 +NaCI
AgCI + NaNO3
Zn + HCI
ZnCI2 + H2
H2O + CO2
H2CO3
Zn + CuSO4
ZnSO4 + Cu
HCI + NaOH
NaCI + H2O
HNO3
N2O5 + H2O
CaCO3
CaO + CO2
C
B
B
D
C
A
C
D
B
B
Lesson 3 : Activities
A. Modified True or False. Write TRUE on the blank if the statement is true. If it is false,
underline the word/s that make/s it wrong and write the correct word on the blank.
TRUE
1. In terms of state, matter can be classified as a pure substance or a
mixture.
Dispersion
2. In a mixture, the substance that is dispersed in another substance is
called the dispersed medium.
TRUE
3. A metalloid exhibits some properties of metals and nonmetals.
Move past each other 4. Metals are said to be ductile because they have the ability to be
hammered into thin sheets without breaking or cracking.
TRUE
5. Nonmetals are good insulators of heat and electricity.
TRUE
6. Compounds are substances composed of two or more kinds of atoms.
Sodium chloride
7. Hydrochloric acid is a kind of acid used as a condiment.
acid
8. In an aqueous solution, the base is responsible for donating H+ ions.
homogenous
9. A heterogeneous mixture is a type of solution.
TRUE
10. The particles in suspensions are bigger than the particles in colloids
B. Classify the following as metals, nonmetals, or metalloids. Write the name of each element
in the appropriate column.
Hydrogen
Krypton
Cesium
Cobalt
Mercury
Silicon
Germanium
Titanium
Argon
Tungsten
Metal
Nonmetal
Cobalt
Tungsten
Mercury
Titanium
Cesium
Argon
Krypton
Hydrogen
Metalloid
Silicon
Germanium
C. Identify each mixture as either homogeneous or heterogenous.
Heterogeneous
1. Orange juice
Heterogeneous
2. Smoke
Heterogeneous
3. Paint
Homogeneous
4. Soda
Homogeneous
5. Steel
Heterogeneous
6. Whipped Cream
Homogeneous
7. Diluted Alcohol
Heterogeneous
8. Seawater
Heterogeneous
9. Vegetable salad
Heterogeneous
10. Soapy water
Lesson 4 : Activities
Identify what separation technique/s can be performed to do the following.
Filtration
1. Separate sand from water
Chromatography
2. Determine the components of a pen’s ink
Sublimation
3. Change solid into gas
Decantation
4. Settle down soil in water
Evaporation
5. Turn water into gas
Distillation
6. Take away the sugar from a sugar solution
Distillation
7. Separate water from the salt solution
Desalination
8. Create pure water from salt water
Distillation
9. Separate sulfide from water and sugar solution
Filtration
10. Separate rocks from water by pouring water out
List the uses of the following products.
1. Dishwashing soap – Dishwashing liquid is used primarily for removing food from used dishes and
tableware.
2. Disinfectant spray – Disinfectants are used to rapidly kill bacteria. They kill off the bacteria by
causing the proteins to become damaged and outer layers of the bacteria cell to rupture
3. Talcum powder – As a powder, it absorbs moisture well and helps cut down on friction, making it
useful for keeping skin dry and helping to prevent rashes. It is widely used in cosmetic products such
as baby powder and adult body and facial powders, as well as in a number of other consumer products
4. Borax – Borax is a powdery white substance, also known as sodium borate, sodium tetraborate, or
disodium tetraborate. It's widely used as a household cleaner and a booster for laundry detergent. It's a
combination of boron, sodium, and oxygen
5. Baking soda – Baking soda, also known as sodium bicarbonate, is widely used in baking.This
is because it has leavening properties, meaning it causes dough to rise by producing carbon
dioxide.
6. Soy Sauce – It makes a great marinade or can be splashed into stews or used in sauces for meat and
vegetables. Use light soy sauce to flavour dishes without darkening them - when stir-frying vegetables or
chicken, for instance. Use dark soy sauce to give colour to noodle dishes; its sweetness also makes it
good as a dipping sauce.
7. Hydrogen peroxide – Hydrogen peroxide is a mild antiseptic used on the skin to prevent infection of
minor cuts, scrapes, and burns. It may also be used as a mouth rinse to help remove mucus or to relieve
minor mouth irritation (e.g., due to canker/cold sores, gingivitis).
8. Petroleum jelly – Heal minor skin scrapes and burns,Moisturize your face, hands, and more
9. Sunblock – Sunscreens are used to protect the skin from the harmful effects of the sun. They help to
prevent sunburn and premature aging (such as wrinkles, leathery skin).
10. Monosodium Glutamate – Monosodium glutamate (MSG) is an important ingredient in the
cuisines of China and Japan and is used commercially in broths, soups, canned and frozen vegetables,
flavouring and spice blends, gravies, meats, poultry, and sauces and in other combinations
Lesson 1 : Activities
A. Drawing
B. Given the following standard values (SV), list at least two sets with 4 values each to
represent what is asked for each number.
1. SV = 105 ; accurate and precise
2. SV = 75.85 ; accurate but not precise
3. SV = 10089 ; not accurate but precise
4. SV = 12.90 ; not accurate and not precise
5. SV = 1621 ; accurate and precise
Lesson 2 : Activities
A. Identify the number of significant figures for the following measurements.
1. 856.000 m
-
has 6 significant figures
2. 0.0007840 s
-
has 4 significant figures
3. 180.0 L
-
has 4 significant figures
4. 6430045 m/s
-
has 7 significant figures
5. 965 m2
-
has 3 significant figures
6. 0.80 mm
-
has 2 significant figures
7. 0.0000789000 cm
-
has 6 significant figures
8. 180.75 mL
-
has 5 significant figures
9. 5000000 g
-
has 1 significant figures
10. 863607000 s
-
has 6 significant figures
B. Perform the following calculations. Express the answer with the correct number of
significant figures.
1 . 56.0 s + 135.002 s + 12 s =
56.0 s
135.002 s
+ 12
203.002s = 203.0s
2. 0.11 m + 0.1110 m + 365 m =
0.11 m
0.1110 m
+
365
365.22m = 365.22m
3. 365.25 L – 80.0 L =
365.25 L
-
80.0 L
285.25L = 285.3 L
4. 18.563 L – 0.5 L =
18.563 L
-
0.5
L
18.063L = 18.1L
5. 50.08 m x 0.1 m x 16 m =
50.08 m
0.1 m
X
16 m
80.128m = 80m
6. 1.6350 cm x 12.03 cm x 103.521 cm =
1.6350 cm
12.03 cm
X
103.521 cm
2036.159725cm = 2036cm
7. 8316.00 m ÷ 21.00 s = 396.0 m/s
8. 999 km ÷ 3.003 hr = 333 km/hr
Exercise
Determine the empirical formulas of the following compounds given their formulas.
1. Benzene (C6H6) - CH
2. Ascorbic Acid (C6H8O6) - C3H4O3
3. Sucrose (C12H22O11) - C12H22O11
4. Naphthalene (C10H4) – C5H4
5. Hydrochloric Acid (HCI) – HCI
Exercises
A. Identify the physical and/or chemical properties in each situation.
Physical Properties 1. Boiling water
Physical Properties 2. Chopping a carrot into tiny pieces.
Physical Properties 3. Blue food color was put in a soft drink
Physical Properties 4. Hammering a galvanized roof
Chemical Properties 5. Cooking food
Chemical Properties 6. Lengthening hair
Physical Properties 7. Crumping paper
Chemical Properties 8. Digesting food
Chemical Properties 9. Baking a cake
Physical Properties 10. Scratching a rock against the surface of the ground
Chemical Properties 11. Ripening of bananas
Chemical Properties 12. A rotten egg
Physical Properties 13. Preparing halo-halo
Chemical Properties 14. Washing Clothes
Chemical Properties 15. Having a bad breath
Exercises
A. Give the chemical name or formula, whichever applies of the following ionic compounds.
1. MgO – Magnesium Oxide
2. AuCl3 - Gold (III) Chloride
3. Hg2CO3 – Mercury (I) Carbonate
4. Fe(OH)3 – Iron (II) Oxide Hydroxide
5. Cu(HCO3)2 – Copper (II) Hydrogen Carbonate
6. Potassium permanganate – KMnO4
7. Ammonium nitrate – Nh4NO3
8. Calcium chlorate – Ca(ClO3)2
9. Potassium dichromate – K2Cr2O7
10. Iron (III) pyrophosphate – FePO4
B. Give the chemical name or formula of the following molecular compounds.
1. SO3 - Sulfur Troxide
2. S2F10 – Disulfur Decafluoride
3. SeCl6 – Selenium Tetrachloride
4. Nitrogen trihydride – NO2
5. Dinitrogen tetroxide – N2O4
6. Phosphorus pentachloride – PCl5
Exercises
A. Identify the element described in each statement.
Iron 1. An element with 26 protons and 30 neutrons.
Boron 2. Has a mass number of 11 and atomic number of 5
Platinum 3. Has 117 neutrons and an atomic number of 78
Tin 4. Has 69 neutrons and 50 protons.
Astatine 5. Has 125 neutrons and an atomic of 85
Exercises
A. Determine whether the following are atoms, molecules, or ions. Write your answers on the blanks.
Atoms 1. Ne
Molecules 2. NO3
Ions 3. O2
Ions 4. K4
Ions 5. HPO42
Molecules 6. N2
Molecules 7. O2
Molecules 8. CO
Atoms 9. Ar
Molecules 10. H2O2
Exercise
Determine whether the following statements are true or false. If your answer is false, state what makes
the statement false.
True 1. If you cut an object repeatedly, you will reach a point where you can no longer cut it any further.
False 2. Atoms of the same element have the same physical but different chemical properties.
- Atoms of the same element have the same physical and chemical properties.
False 3. The law of constant composition was formulated by John Dalton.
- The law of multiple proportions was formulated by John Dalton.
False 4. The law of Multiple proportions states that all samples of a chemical compound contain the
same elements in the same proportion.
- The law of constant composition states that all samples of a chemical compound contain the
same elements in the same proportion.
True 5. The law of conservation of mass is the basis for stoichiometry.
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