What Is Chemistry?
Laboratory Rules & Safety
Scientific Method & Measurement
Properties of Matter
Classification of Materials
100

True/False

Chemistry is only about mixing dangerous chemicals.

False

Chemistry is the study of matter and its changes â€” it includes cooking, cleaning, medicine, and much more.

100

Fill in the Blanks

You should always ___ long hair before entering the lab.

A. tie back 

B. wash 

C. dye 

D. comb

A. tie back 

Tying back hair prevents it from catching fire or interfering with equipment.

100

True/False

A hypothesis is a wild guess made without any background knowledge.

False

A hypothesis is an educated prediction based on prior knowledge and observation.

100

True/False

Mass and weight are the same thing.

False

Mass is the amount of matter in an object; weight is the force of gravity acting on that mass.

100

True/False

All metals are magnetic.

False

Only a few metals like iron, cobalt, and nickel are magnetic â€” most are not.

200

MCQ
Which of the following best describes chemistry?


A. Study of stars 

B. Study of living things 

C. Study of matter and its changes 

D. Study of numbers

C. Study of matter and its changes 

Chemistry focuses on matter, its properties, and how substances interact and transform.

200

True/False

It’s safe to leave a Bunsen burner unattended if the flame is small.

False

Never leave open flames unattended — even small ones can cause accidents.

200

MCQ
Which step comes first in the scientific method?

A. Analyze data 

B. Form a hypothesis 

C. Make observations 

D. Draw conclusions

C. Make observations 

Observation is the starting point — noticing something that leads to a question or investigation.

200

MCQ
Which of the following is a physical property?


A. Ability to rust 

B. Flammability 

C. Boiling point 

D. Reactivity with acid

C. Boiling point 

Boiling point is a physical property — it describes a change in state, not a chemical reaction.

200

MCQ

Which of the following is a non-metal?

A. Copper 

B. Sulfur 

C. Zinc 

D. Aluminium


B. Sulfur 

Sulfur is a non-metal — it’s brittle, dull, and does not conduct electricity.

300

Fill in the Blanks

The study of matter and how it behaves is called ___.
A. chemistry 

B. astronomy 

C. geography 

D. economics

A. chemistry 

Chemistry explores how matter changes, reacts, and interacts with energy.

300

MCQ

Never leave open flames unattended — even small ones can cause accidents.

A. Flame 

B. Skull and crossbones 

C. Test tube pouring on hand 

D. Exclamation mark

C. Test tube pouring on hand

The corrosive symbol shows a substance damaging skin or materials — often acids or alkalis.

300

True/False

The dependent variable is what you measure in an experiment.

True

The dependent variable responds to changes in the independent variable â€” it's what you observe or measure.

300

Fill in the Blanks

The amount of space an object takes up is called its ___.

A. volume 

B. mass 

C. weight 

D. density

A. volume 

Volume measures how much space matter occupies, often in cmÂł or mL.

300

Fill in the Blanks

Materials that allow electricity to flow through them are called ___. 

A. conductors 

B. insulators 

C. magnets 

D. alloys

A. conductors 

Conductors allow electric current to pass — metals like copper are good examples.

400

MCQ

Which branch of chemistry deals with carbon-based compounds?
A. Physical chemistry 

B. Organic chemistry 

C. Analytical chemistry 

D. Inorganic chemistry

B. Organic chemistry 

Organic chemistry studies compounds containing carbon, especially those found in living things.

400

True/False

Eating and drinking are allowed in the lab if no chemicals are present.

False

Food and drink are strictly prohibited in labs to prevent contamination and accidental ingestion.

400

MCQ

Which instrument is best for measuring mass?
A. Thermometer 

B. Stopwatch 

C. Balance 

D. Measuring cylinder

C. Balance 

A balance measures mass, while a measuring cylinder is used for volume.

400

MCQ

Which of the following materials is least dense?
A. Lead 

B. Water 

C. Air 

D. Iron

C. Air 

Air is a gas with particles far apart, making it much less dense than solids or liquids.

400

MCQ 

Which of the following is a synthetic material?

A. Wood 

B. Cotton 

C. Nylon 

D. Wool

C. Nylon 

Nylon is man-made — it’s a synthetic polymer used in fabrics and ropes.

500

MCQ

Which of the following is not a chemical change? 

A. Burning wood 

B. Rusting iron 

C. Melting ice 

D. Baking a cake
chemical change?

C. Melting ice 

Melting ice is a physical change — no new substance is formed.

500

Fill in the Blanks

Broken glassware should be reported and cleaned up using a ___.

A. dustpan 

B. broom 

C. gloved hand 

D. tongs

D. tongs

Use tongs or forceps to avoid cuts — never pick up broken glass with bare hands.

500

MCQ
Which unit is used to measure volume in the lab?

A. grams 

B. degrees 

C. seconds 

D. cubic centimeters

D. cubic centimeters


Volume is measured in cmÂł or mL, not grams (mass) or seconds (time).

500

Fill in the Blanks

A substance that can be stretched into wires is said to be ___.

A. ductile 

B. brittle 

C. soluble 

D. magnetic

A. ductile 

Ductility is the ability to be drawn into wires — common in metals like copper.

500

Fill in the Blanks

A mixture of two or more metals is called an ___. 

A. alloy 

B. compound 

C. solution 

D. element

A. alloy 

Alloys like brass (copper + zinc) combine metals for improved properties.

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