WorksheetsRevision 1 Form 1
Total questions: 20
Worksheet time: 11mins
What is the function of this apparatus?
To spread heat evenly during heating
To support apparatus during heating
To measure a fixed volume of liquid
To heat up the chemical effectively
What is the meaning of this hazard symbols?
Corrosive chemicals
Radioactive materials
Poisonous chemicals
Explosive materials
Which of the following is the safety measures when using chemicals and apparatus?
Do not point the mouth of the test tube at your face or at other people.
Keep highly flammable chemicals away from any heat sources
Use safety goggles when mixing or heating chemicals.
Do not taste or smell anything unless allowed by the teacher.
Look at the objects in Photograph 1. State the S.I. unit that you can use to measure the physical quantity of this object?
ampere
kilogram
metre
kelvin
Observe the layers of liquids, which statement is not correct?
Vegetable oil has the most density.
Vegetable oil has the less density
Cone syrup has the most density
Vegetable oil has less density than the cone syrup
What kind of cell is shown
plant
meiosis
mitosis
animal
Select the organelle that release energy
mitochondria
nucleus
vacuole
cytoplasm
The function of the cell wall is
absorbs energy from sunlight
controls the material passing into and out of it
encloses the cell membrane and gives to the cell plant shape
Which of the following is an example of positive feedback?
Thermoregulation
Blood Pressure
Childbirth
Blood Sugar Levels
Select the main gases present in air
Oxygen
Water vapour
Carbon dioxide
Nitrogen
Matter is something that has
weight and density
shape and volume
volume and light
mass and occupy space
Which one is correct about the comparison of characteristics of three states of the matter?
Solid have fixed shape, liquid and gaseous takes the shape of the container
Solid have fixed mass, liquid and gaseous has no fixed mass
Solid have fixed volume, liquid and gaseous follows the volume of the container
Solid compressible, liquid and gaseous difficult to compress
Which one is not correct about the structure of an atom?
Electron is particle with negative charge.
Proton is particle with positive charge.
If the number of neutrons is equal to the number of protons, an atom is neutral.
If the number of electrons is equal to the number of protons, an atom is neutral.
What is a compound?
A compound consists of two or more elements combined chemically.
A compound can be produced from a physically reaction.
A compound consists of two or more elements mixed physically.
A compound consists of two or more mixtures combined
What is methods to separate mixtures of sand and salt?
Distillation
Chromatography
Filtration.
Floatation
What is methods to separate mixtures of sand and salt?
Distillation
Chromatography
Filtration.
Floatation
Which of the below are the example of sources which pollute the air from the factory?
Smoke, soot, dust, carbon monoxide
Aerosol spray, chemical fertilizers
Radioactive materials
Chlorofluorocarbon (CFC)
Which of the optical instruments are not invented by scientists based on the concept of light reflection to enhance the ability of human senses?
Periscope
Kaleidoscope
Microscope
Telescope
