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Which best describes a heterogeneous mixture?
it contains two or more types of particles which are easily distinguished.
the number of protons
melting an ice cube
The reactants and products have the same atoms
53
Selenium (Se)
Rubidium
Ammonia (NH3)
What does the atomic number tell us?
it contains two or more types of particles which are easily distinguished.
the number of protons
melting an ice cube
The reactants and products have the same atoms
53
Selenium (Se)
Rubidium
Ammonia (NH3)
If Potassium reacts with Oxygen to form a compound in the ratio of two Potassium to one oxygen atom. Element Q also reacts with Potassium in the ratio of two Potassium to one element Q atom. Which is most likely element X?
it contains two or more types of particles which are easily distinguished.
the number of protons
melting an ice cube
The reactants and products have the same atoms
53
Selenium (Se)
Rubidium
Ammonia (NH3)
Which of the following is a compound
it contains two or more types of particles which are easily distinguished.
the number of protons
melting an ice cube
The reactants and products have the same atoms
53
Selenium (Se)
Rubidium
Ammonia (NH3)
Cesium reacts with water. Which element below would most likely react with water also.
it contains two or more types of particles which are easily distinguished.
the number of protons
melting an ice cube
The reactants and products have the same atoms
53
Selenium (Se)
Rubidium
Ammonia (NH3)
Which of the following correctly describes how the Law of Conservation of Mass relates to a chemical reaction?
it contains two or more types of particles which are easily distinguished.
the number of protons
melting an ice cube
The reactants and products have the same atoms
53
Selenium (Se)
Rubidium
Ammonia (NH3)
How many protons are in one atom of Iodine (I)?
it contains two or more types of particles which are easily distinguished.
the number of protons
melting an ice cube
The reactants and products have the same atoms
53
Selenium (Se)
Rubidium
Ammonia (NH3)
Which of the following is a physical change?
it contains two or more types of particles which are easily distinguished.
the number of protons
melting an ice cube
The reactants and products have the same atoms
53
Selenium (Se)
Rubidium
Ammonia (NH3)
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