August 2019 Chemistry Regents Questions 1-10

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An orbital is a region in an atom where there is a high probability of finding

Which two terms represent types of chemical formulas?

Which element is classified as a metalloid?

As the elements in Period 2 are considered in order from lithium to fluorine, there is an increase in the

Which electron shell in an atom of calcium in the ground state has an electron with the greatest amount of energy?

Which symbol represents a particle that has a mass approximately equal to the mass of a neutron?

Which term represents the fixed proportion of elements in a compound?

Strontium and barium have similar chemical properties because atoms of these elements have the same number of