GC2 - Q1 - Summative Test 1
GC2 - Q1 - Summative Test 1
GC2 - Q1 - Summative Test 1
QUARTER 1, SY 2021-2022
Instructions: Read each question carefully and write the correct answer in a
separate sheet of paper, or in the answer sheet provided to you. Do not write
anything on this test questionnaire.
1. What do you call the property of matter which measures the rate at which a
substance transfers heat?
A. Malleability
B. Flammability
C. Thermal conductivity
D. Electrical conductivity
6. What are the two chemical properties of matter can be observed in an exploding
firework?
A. Flammable and Reactive
B. Flammable and Malleable
C. Change of color and Ductile
D. Change of color and Explosive
8. Suppose you are tasked to create a plan for getting the salt from the mixture of
sand and salt. Which of the following is the correct order for the separation?
A. Dissolving in water filtration evaporation
B. Evaporation filtration dissolving in water
C. Filtration dissolving in water evaporation
D. Filtration evaporation dissolving in water
9. Table salt is a compound with the chemical name, Sodium Chloride. What is its
chemical formula?
A. CaCO3
B. Mg(OH)2
C. NaBr
D. NaCl
11.Illustrate the formula for the compound that forms between the element sodium
and bromine.
A. NaBr
B. NaBr2
C. Na2Br
D. SBr2
A. 1
B. 2
C. 3
D. 4
15.Select from the following pure substances that correctly matched to its chemical
symbol or chemical formula?
A. Carbon monoxide, CO2
B. Iron, I
C. Manganese, Mg
D. Water, H2O
16.You are tasked to draw the structure of the table sugar. The first thing to do is
to organize and identify the number of atoms of each element. Which of the
following is the correct set of number?
A. C – 11; H – 22; O – 12
B. C – 12; H – 11; O – 22
C. C – 22; H – 11; O – 12
D. C – 12; H – 22; O – 11
18.Which of the following best explains why Glycerine (C3H8O3) is used in the
production of bath soap?
A. To Cure skin infection
B. To improve personal Hygiene
C. To remove oils from the body
D. To remove the moistures in the body
Test Developer: Myra Joy B. Montero DepEd-
School: Lianga National Comprehensive High School Caraga
Email Address: myrajoy.montero@deped.gov.ph Sukdana
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19.You are buying two different products with the same components and quality.
As a wise consumer, what will be your next basis in choosing the product?
A. Brand
B. Cost
C. Ingredients
D. Use
20.Which of the following household cleaning materials should not be mixed with
an acid to avoid the release of toxic chlorine gas?
A. Commercial soap
B. Sodium hydroxide
C. Hydrogen peroxide
D. Sodium hypochlorite
23.In your chemistry class, your teacher asked you to prepare a business plan on
Personal care products, specifically cosmetic products. Which of the following
set of ingredients will most likely you will consider in your plan?
A. water, emulsifier, fragrance
B. emulsifier, bleach, thickener
C. bleach, abrasives, preservative
D. thickener, emollient, abrasives
24.Which of the following methods is best for separating the mixture of ethyl
alcohol and water?
A. Decantation
B. Distillation
C. Evaporation
D. Sublimation
26.During your laboratory activity, you are asked to separate the mixture of water
and acetone. Which of the following separation techniques will you use?
A. Steam distillation
B. Simple distillation
C. Vacuum distillation
D. Fractional distillation
27. Which of the following can be separated using this method as shown in figure 2?
30.Given the following materials: pencil, thin layer chromatography plate, beaker,
and black dye, design an experiment on how to prepare a Thin Layer
Chromatography (TLC) plate before developing the plate.
A. Prepare the plate by carefully spotting a small amount of dye at the
bottom of the plate.
B. Add 0.5 cm eluent to the beaker and transfer the plate to the beaker
using the tweezers.
C. Put the TLC plate in the development chamber, then add an amount of
eluent to the beaker.
D. Draw a line in pencil about 1cm from the bottom of the plate and add
hash marks perpendicular to the line. Carefully spot a small amount of
dye on the hash marks.