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WorksheetsSS1 T1 INTRO TO CHEM
Total questions: 20
Worksheet time: 10mins
Chemistry is best defined as the study of _______.
plants and animals
composition, properties, and changes of matter
celestial bodies
living organisms
Chemistry is often called the central science because _______.
it is studied at the centre of schools
it links other sciences together
it is the most difficult subject
it deals only with laboratory work
Which of the following is NOT a branch of chemistry?
Organic chemistry
Physical chemistry
Social chemistry
Analytical chemistry
The main reason for studying chemistry is to _______.
learn formulas by heart
understand matter and its interactions
discover only new elements
memorize names of scientists
Which of the following illustrates the importance of chemistry in agriculture?
Use of pesticides and fertilizers
Road construction
Textile dyeing
Radio broadcasting
The application of chemistry in medicine includes _______.
making chalk
developing drugs and vaccines
designing roads
building bridges
Which of the following is an adverse effect of chemistry on the environment?
Food preservation
Air pollution
Soap production
Fertilizer manufacture
Excessive use of chemical fertilizers can lead to _______.
increase in soil fertility
destruction of soil structure
rapid growth of crops forever
absence of erosion
Drug abuse is harmful mainly because it _______.
improves body metabolism
causes addiction and organ damage
makes a person more intelligent
increases food appetite
Which of the following is NOT a career in chemistry?
Pharmacist
Chemical engineer
Medical doctor
Musician
A chemist working in the petroleum industry is likely to be involved in _______.
soil erosion control
crude oil refining
road construction
teaching literature
Which of the following careers requires knowledge of chemistry?
Tailoring
Nursing
Painting
Singing
The first step in the scientific method is _______.
conclusion
hypothesis
observation
experimentation
A hypothesis is best described as _______.
a proven law
a tentative explanation subject to testing
an accepted theory
a confirmed fact
Which of the following steps comes immediately after formulating a hypothesis in the scientific method?
Observation
Conclusion
Experimentation
Data recording
In the scientific process, data collected during an experiment are usually _______.
ignored if they do not fit expectations
analysed to draw conclusions
kept secret from others
memorized only
One importance of the scientific method is that it _______.
makes experiments unnecessary
ensures results are reliable and reproducible
discourages collaboration
removes the need for observation
Which of the following illustrates an application of chemistry in the environment?
Recycling of plastics
Singing competitions
Building bridges
Story writing
Improper disposal of chemical waste may lead to _______.
increase in food production
water pollution
soil fertility
pest control
Which of the following correctly shows the order of steps in the scientific method?
Observation → Hypothesis → Experiment → Conclusion
Hypothesis → Conclusion → Observation → Experiment
Experiment → Observation → Hypothesis → Conclusion
Conclusion → Hypothesis → Experiment → Observation
