CHEMISTRY IS CHEMISTRY

Chemistry is defined as the study of

• living organisms

• motion and forces

• physical phenomena

• matter and its changes

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NGSS.MS-PS1-1

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Chemistry is essential in the study of the following fields except

• Geology

• Accountancy

• Pharmacology

• Food Technology

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NGSS.MS-PS1-2

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Which activities require chemistry knowledge ?

P : Dissolving

sugar in a drink

Q : Preventing the gate from rusting

R : Removing paint stains

• P and Q only

• P and R only

• Q and R only

• P, Q and R

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NGSS.MS-PS1-2

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The statements below are the steps involved in an investigation.

P Making hypothesis

Q Identifying and controlling variables

R Identifying problem

S Collecting data

T Making conclusion

U Interpreting data

Which of the following is the correct sequence?😄

• P, Q, R, S, T, U

• Q, P, R, T, S, U

• R, P, Q, S, U, T

• R, Q, P, U, S, T

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NGSS.MS-PS2-2

Which of the following is done if a hypothesis is rejected in an experiment?

• A theory is made

• Variables are changed

• A new hypothesis is made

• The scientific concept is changed

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NGSS.MS-LS2-4

The higher the temperature of the water,

the higher the mass of sugar dissolved in it.

Which is the responding variable for the above experiment?

• Temperature of the water

• Mass of sugar dissolved

• Volume of the water

• Size of the sugar granules

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NGSS.MS-PS1-4

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Which chemical cannot be found in the sea?

• Chlorine

• Potassium

• Helium

• Magnesium

Which of the following is not true?

• COPPER

  Making of

  electrical wires

• CALCIUM OXIDE

  Making of cement and mortar

• SAND

  Making of glass

• ZINC

  Making of soft drink can

Polyethene terephthalate is a chemical manufactured in the petrochemical plant in Gebeng, Pahang.

This chemical is used to produce..

• plastic bottles

• medicine

• clothing

• fertilizer

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NGSS.MS-PS1-3

Which one of the following substances consists of atom?

• Water, H₂O

• Zinc metal, Zn

• Carbon dioxide gas, CO₂

• Solid sodium chloride, NaCl

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NGSS.MS-PS1-1