Chapter 2 Vocab

Question 0

Energy

Answer 0

THE CAPACITY TO CAUSE CHANGE, especially to do work (to move matter against an opposing force)

Question 1

Compound

Answer 1

A substance consisting of TWO OR MORE DIFFERENT ELEMENTS COMBINED in a fixed ratio

Question 2

Covalent bond

Answer 2

A type of STRONG CHEMICAL BOND in which two atoms share one or more pairs of valance electrons

Question 3

Molecule

Answer 3

Two or more ATOMS HELD TOGETHER BY COVALENT BONDS

Question 4

Single bond

Answer 4

A SINGLE COVALENT BOND; the SHARING of a pair of valence electrons by two atoms

Question 5

Double bond

Answer 5

A DOUBLE COVALENT BOND; the SHARING of two pairs of valence electrons by two atoms

Question 6

Polar covalent bond

Answer 6

A covalent bond between atoms THAT DIFFER IN ELECTRONEGATIVITY. The shared electrons are pulled closer to the more electronegative atom, making it slightly negative and the other atom slightly positive

Question 7

Hydrogen bond

Answer 7

A type of WEAK CHEMICAL BOND that is formed when the slightly positive hydrogen atom of a polar covalent bond in one molecule is ATTRACTED to the slightly negative atom of a polar covalent bond in another molecule

Question 8

Chemical reactions

Answer 8

The MAKING AND BREAKING OF CHEMICAL BONDS, leading to changes in the composition of matter

Question 9

Reactants

Answer 9

A STARTING MATERIAL in a chemical reaction

Question 10

Products

Answer 10

A MATERIAL RESULTING from a chemical reaction

Question 11

Chemical equilibrium

Answer 11

In a chemical reaction, the state in which the rate of the forward reaction equals the rate of the reverse reaction, so that the RELATIVE CONCENTRATION OF THE REACTANTS AND PRODUCTS DOES NOT CHANGE WITH TIME