3. IMPORTANT VOCABULARY
WORDS
VOCABULARY WORD MEANING
1. Subscript
○ A small number written at the lower right
corner of a chemical symbol.
2. Chemical symbol
○ An abbreviation that represents the name of
an element.
4. Chemical Formula
Chemical refers to a compound or
substance while formula refers to the
symbolic expression.
Thus, a chemical formula is a symbolic
expression of a compound or substance.
It is also described as shorthand of
expressing the types and the number of
atoms in a substance.
5. What is the Meaning of a Given
Chemical Formula?
Once again, chemical formula is the
shorthand of expressing the types and
the number of atoms in a substance.
For example, CO2 is the chemical
formula of a substance known as carbon
dioxide.
But what does this CO2 formula mean?
What information can we get from this
formula?
7. The chemical formula also tells the number
of each type of atom and the central atom
of the molecule specifically if it is not a
diatomic molecule.
The first chemical symbol written at the
right side of the formula tells us that it is the
central atom, or the atom located at the
center of the molecule.
So, for CO2, since C is the first letter of the
chemical formula, the C which is the
carbon atom is the central atom.
10. If the letter is the chemical symbol that
represents an element, the subscript
represents the number of atom in the chemical
formula.
In CO2, the subscript of oxygen is 2 while
carbon is 1.
Even though there is no number 1 indicated
after letter C in CO2, it is presumed that there is
one.
So the number after the letter refers to its
number of atoms.
11. Activity 1 – Chemical Formula
and Molecular Structure
Determine the common
name, the types and the
number of atoms of the given
chemical formula in each
item. Fill-in the table with
correct information.
15. QUIZ!!!
Complete each statement with a word/
concept in the blank of the item.
1. _____ is shorthand of
expressing the types and the
number of atoms present in a
substance.
17. QUIZ!!!
Complete each statement with a word/
concept in the blank of the item.
3. There is/are ____
nitrogen atom/s present in
this chemical formula
NH3.
23. IMPORTANT VOCABULARY
WORDS
VOCABULARY WORD MEANING
1. Cost
○ The amount or prize of a produced product.
2. Consumer product
○ The final good that is bought for personal use.
25. 1. Which problem is being addressed by the
invention of the bath soap?
2. What substances are needed to make bath
soap?
26. Consumer Product
Consumer product is the final good that is
bought by individuals or households for
personal use.
In other words, consumer products are
goods that are bought for consumption by
the average consumer.
27. Consumer products
Consumer products were made possible
because of the interactions of Science,
Technology and Society.
The Knowledge (Science) is being used to
come up with the different consumer
products (Technology) that address
problems of the community (Society).
For example, Bath soap (Technology) is a
consumer product which we usually use to
solve a problem of the Society that is skin
infection and poor hygiene.
28. Consumer product
The Science, Technology and Society are
interrelated to one another because any
change in one aspect could trigger also a
change to other aspects.
Meaning if Knowledge (Science) will
improve due to new or latest discoveries
made by scientists or even an ordinary
person (Society), there will be also a
corresponding effect or improvement to the
consumer products (Technology) we use
every day.
29. Consumer product
There are many consumer products
available in the market because of their
usefulness. However, the same consumer
products may post danger to anyone.
Now, when is a consumer product
may cause danger if it is very
useful to us?
30. Consumer product
A consumer product may cause harm to us for
two reasons.
First is when we abuse or misuse such product.
○ A good example of this would be the solvent like rugby that
was invented to use as an adhesive material.
○ But for some instances, the same solvent is being used by
drug dependent.
And secondly is if a consumer product was made
intended to cause harm such as gun powder and
poisons.
31. Let us analyze the table
(next slide) that shows
information of bath soap in
terms of its some chemical
components, use, safeness,
and cost.
32.
33. Based from the table, some of the chemical
components used to make bath soap are:
o glycerine,
o sodium hydroxide and
o titanium dioxide.
Glycerine is added to soap as emollient and
texture enhancer while sodium hydroxide is
added to bath soap to as main ingredient.
Titanium dioxide is added to make the bath
soap opaque while Triclosan is added as the
active anti-bacterial ingredient.
34. Assignment – My Consumer
Product
Procedure
1. Choose a consumer product that is available
in the field of medicine, communication,
transportation and agriculture.
2. Fill-in the table with correct information.
