Quiz 1b (09.18.2020) Flashcards Preview

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Flashcards in Quiz 1b (09.18.2020) Deck (16)
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1

A mol is the measure of the material containing _____ particles.

6.022 x 10^23

2

The mass of 1 mol of atoms of an element is the _______.

molar mass

3

Elements combine with each other to form_____.

compounds

4

When two or more elements combine to form a compound, an _______.

entirely new substance results

5

Compounds are composed of atoms held together by ______.

chemical bonds

6

Chemical bonds are classified into two types, what are they?

ionic and covalent

7

Ionic bonds occur between ____.

metals and nonmetals (transfer of electrons from one atom to another)

8

What is a lattice?

a rectangular three-dimensional array of alternating cations and anions.

9

In an ionic bond, the metal atom becomes a ___.

cation

10

In an ionic bond, the nonmetal atom becomes an _____.

anion

11

Covalent bonds occur between _______.

two or more nonmetals (involve the sharing of electrons between two atoms)

12

When a nonmetal bonds with another nonmetal______.

neither atom transfers its electron to the other (instead the bonding atoms share some of their electrons)

13

The covalently bound atoms compose a molecule - hence, we call covalently bonded compounds _______.

molecular compounds (covalent compounds and molecular compounds are the same thing)

14

What are the three different types of chemical formulas?

empirical, molecular, structural

15

An ______ gives the relative number of atoms of each element in a compound.

empirical formula

16

A ______ gives the actual number of atoms of each element in a molecule of a compound.

molecular formula