Atoms & Bonding Quiz

Froggy Jumps

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Atoms, bonds, and reactions basics

MARY CAUSEY

United States

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Atoms & Bonding Quiz


Froggy Jumps Atoms & Bonding QuizVersion en ligne Atoms, bonds, and reactions basics par MARY CAUSEY 1 What does a subscript in a chemical formula indicate? a Charge of the atom b Isotopic composition of the element c Number of atoms of that element in one molecule 2 In NaCl, is the bond ionic or covalent? a Covalent b Metallic c Ionic 3 How many total atoms are in H2O? a 4 b 2 c 3 4 In the equation 2H2 + O2 -> 2H2O, which are the reactants? a 2H2 and O2 b H2 and O2O c 2H2O 5 In CO2, how many atoms of oxygen are there? a 3 b 2 c 1 6 What does a coefficient in front of a molecule indicate? a The number of atoms in the molecule b The number of molecules needed in the reaction c The charge of the molecule 7 Are ionic compounds generally composed of metal and nonmetal? a Yes b No c Only noble gases 8 Balance this equation: H2 + O2 -> H2O. What is the coefficient of H2O? a 2 b 1 c 3 9 In Mg(NO3)2, how many nitrogens are present? a 2 b 4 c 1 10 Which statement describes a covalent bond? a Transfer of electrons from metal to nonmetal b Metallic bonding with a sea of electrons c Sharing electrons between atoms