Sit back, relax and have fun with this Physical Science Practice quiz.
The outcome is controlled.
Results are obtained by computer models.
One variable is fixed while all others are changed.
One variable is changed while all others remain fixed.
Any visible solid that has mass.
Any liquid that takes up space and has mass.
Anything that takes up space and has mass.
Any liquid or solid that takes up space.
Melting ice cubes
The volume of the gas increases and the speed of the particles in increases.
The speed of the particles decreases.
The volume decreases.
The pressure decreases.
Both gases and liquids.
Neither gases or liquids.
The nucleus can be compared to the sun.
Electrons orbit the nucleus.
An electron's path is not known exactly.
Electrons exist in energy levels.
Moving electrons form an electron cloud.
Electrons and protons circle neutrons.
Neutrons have a positive charge.
The number of protons an atom has varies.
They have the same number of protons.
They have the same mass number.
They have similar chemical properties.
They have the same number of total electrons.
Its molar mass is 83.79 g/mol Kr.
Its atomic number is 36.
One mole of krypton atoms has a mass of 41.90 g.
It is a noble gas.
Compounds are held together by chemical bonds.
Each substance in a compound maintains its own properties.
Each original substance in a compound remains chemically unchanged.
Mixtures are held together by chemical bonds.
Energy is conserved.
The formation of bonds in the product releases more energy than is required to break the bonds in the reactants.
Energy is released as bonds form.
All of the above.
Here's an interesting quiz for you.