What is the purpose of the periodic table?
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1 point
To identify atoms in a compound
To organize elements based on their atomic number
To determine the atomic mass of an element
To predict the reactivity of elements
To organize elements based on their atomic number
How does the periodic table help to predict the properties of elements?
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1 point
Elements in the same group have similar properties
Elements in the same period have similar properties
The number of protons in an atom's nucleus
Elements with higher atomic numbers are more reactive
Elements with lower atomic masses are more reactive
Elements in the same group have similar properties
How does the periodic table help to predict the properties of elements?
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1 point
Elements in the same group have similar properties
The number of protons in an atom's nucleus
Elements with lower atomic masses are more reactive
Elements in the same group have similar properties
If the atomic number of an element is six and the atomic mass is 15, how many neutrons does it have?
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1 point
6 Neutrons
9 Neutrons
15 Neutrons