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Which is the densest?
Iron
Which is denser?
Sample B
Give the function of the inner jaws, outer jaws and tail of a Vernier caliper.
inner jaws-measure the internal diameter, outer jaws-measure the external diameter, tail-measures the depth
What is the zero error?
+ 0.06
State the readings given by the vernier scale.
2.13
What is a hypothesis?
A good guess or proposed explanation made on the basis of limited evidence (observation) as a starting point for further investigation.
A graduated cylinder, also known as measuring cylinder or mixing cylinder is a common piece of laboratory equipment used to measure the ___________________________________.
volume of a liquid
What does the hazard symbol mean?
corrosive: will dissolve the structure of an object.
Explain density.
the amount of matter per unit volume
Explain thermal conductivity
is a measure of its ability to conduct heat
What does the hazard symbol irritant mean?
A substance that may cause irritation to the skin, eyes or inside your body.
1 ml= ______L
0.001 L
____________ are the most widely used system of units to the people of the entire world in technical and scientific research to avoid the confusion with the units.
SI/ Systeme International d' Unites
The _______________ of a materials is the temperature at which it changes in state from a solid to a liquid.
melting point
True or false: Science is the study of the natural and physical world
true
Describe the following positive attitudes that we should have when carrying out scientific inquiry: objectivity, perseverance and curiosity.
Objectivity are based on facts and are free from bias(personal opinion). Perseverance means not to give up.Curiosity is a strong desire to know or learn somethi
3 major branches of Science
Physics, Biology, Chemistry
What does the hazard symbol mean?
biohazard: substances that pose a potential danger or risk to human life
The amount of space an object occupies.
volume
The distance between two specified points.
length
1 ton is equal to _______________ kg
1000
A measure of the quantity of matter in a body.
mass
Which instrument is most suitable to use to measure the waist of a person ?
measuring tape
Formula of density
mass/volume or mass:volume


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