Atoms Molecules Mixtures and Compounds
The number of metallic elements in the periodic table is close to
twenty
forty
sixty
fifty
sixty
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The non-metals exist in two of the three states of matter i.e. gas and solid, atA. room temperature
B. freezing point
C. sunshine
D. oven
Substance that is able to get dissolved in the solvent is said to be
A. solute
B. solvent
C. insoluble
D. soluble
We breathe a gas. This gas is
A. hydrogen
B. oxygen
C. nitrogen
D. helium
The substance dissolved in the solvent is known as
A. solvent
B. insoluble
C. soluble
D. solute
The number of atoms of each element in a compound is known as
A. form
B. chemical formula
C. chemistry
D. composition
Hydrogen causes a balloon to lift up in
A. clouds
B. air
C. space
D. water
Substance that is unable to dissolve in the solvent is known as
A. insoluble
B. solute
C. solvent
D. soluble
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