Element T has 7 protons. Element Q has 15 protons. Element X has 12 protons. Element Z has 17 protons. According to the periodic table, which of the elements is metal?

What is the total number of electrons in an atom with an atomic number of 13 and a mass number of 25

Scientist believe that interactions between atoms depend mostly on the arrangement of the valance electrons. This theory is MOST supported by the observation of similar reactions

Which of the following best describes a change in iron caused by a chemical reaction?

Which of the following lists the properties of metals

Na2+H2SO4-> Na2SO4+ H2 Which of the following lists all of the reactants of the equation shown above?

How many total atoms are in a molecule of iron oxide, Fe2O3?

How many different elements are in Mg(OH)2?

What is the charge of a neutron and where is it located within an atom?

According to the periodic table, all of the following are nonmetals except---

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