Science Unit 4 Test Review
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14 Terms
What do metal elements do in chemical bonding?
Donate electrons.
What do nonmetal elements do in chemical bonding?
Accept electrons.
What type of bond is formed between a metal and a nonmetal?
Ionic bond.
What type of bond is formed between two nonmetals?
Covalent bond.
What type of bond is formed between two metals?
Metallic bond.
What happens to valence electrons during a reaction between a metal and a nonmetal atom?
They are transferred, resulting in an ionic bond.
What is the balanced equation for the reaction of potassium and chlorine?
3K + Cl2 = 3KCl.
In the reaction 3K + Cl2 = 3KCl, what is the coefficient for K?
What does the subscript in the equation 3K + Cl2 = 3KCl represent for Cl?
What are the reactants in the equation 3K + Cl2 = 3KCl?
3K + Cl2.
What are the products in the equation 3K + Cl2 = 3KCl?
3KCl.
What does the law of Conservation of Mass state regarding chemical reactions?
Matter is neither created nor destroyed; the mass of products equals the mass of reactants.
What occurs during an endothermic reaction?
Heat is absorbed.
What occurs during an exothermic reaction?
Heat is released.
Flashcards (20)