12 Questions
What type of change is the formation of Cl2 gas when muriatic acid is mixed with bleach powder?
Chemical change
Which process involves a chemical change?
Mixing muriatic acid with bleach powder
In Rutherford's model of the atom, where is nearly all of the atom's mass located?
In the nucleus
What determines the actual volume of an atom according to Rutherford's model?
The size of the electron cloud
How was the wave nature of light proven?
Bright spots would appear if light traveled as a particle
Which one of these processes involves a physical change?
Recharging a lithium-ion battery
What is the phenomenon known as when the prediction of the Rayleigh-Jeans Law fails in the ultraviolet range?
Ultraviolet catastrophe
According to Max Planck, what is the smallest quantity of energy that can be emitted or absorbed as electromagnetic radiation?
Quantum
What is the equation that represents a photon's energy, according to the Photoelectric Effect?
E = hv
Quantum numbers are used to describe the properties of electrons in an atom. Which of the following sets of quantum numbers is valid?
0, 0, 0, ½
What did Max Planck propose in 1900 about the energy (or light) released or absorbed by atoms?
It can be released or absorbed in discrete 'chunks'.
In the context of blackbody radiation, what happens when a blackbody is heated?
It emits all wavelengths of light.
Test your knowledge on distinguishing between physical and chemical changes with scenarios like formation of Cl2 gas from mixing HCl and NaOCl, recharging a lithium ion battery, conversion of dry ice to smoke, and fermentation of milk to yogurt. Calculate the density of a solid substance based on its volume and mass change in water.
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