Caption Quiz #2 (2.6-2.9)

2.7 : Hydrogen Bonding and Cohesion

Each molecule of water can form multiple hydrogen bonds with other water molecules. The strong attraction between produces a force sometimes called "Surface Tension," which can support very lightweight objects such as this raft spider.

FITB 2.6 : A Water Molecule : A water molecule is _____ because there is an ______ distribution of _________ between the ______ and ________ atoms. The ________ pole is between the _______ atoms.

polar uneven electrons oxygen hydrogen negative hydrogen

2.6 : A Water Molecule

A water molecule is polar because there is an uneven distribution of electrons between the oxygen and hydrogen atoms. The negative pole is between the hydrogen atoms.

2.8 : Adhesion

Adhesion between water and glass molecules is responsible for causing the water in these columns to rise. The surface of the water in the glass column dips slightly in the center, forming a curve called a meniscus.

2.9 : A Salt Solution

When an ionic compound such as sodium chloride is placed in water, water molecules surround and separate the positive and negative ions.

FITB 2.9 : A Salt Solution : When an _____ _________ such as ______ ________ is placed in _____, _____ molecules surround and separate the ________ and ________ ions.

ionic compound sodium chloride water water positive negative

FITB 2.8 : Adhesion : Adhesion between _____ and _____ molecules is responsible for causing the water in these columns to ____. The _______ of the water in the glass column ____ slightly in the ______, forming a _____ called a ________.

water glass rise surface dips center curve meniscus

FITB 2.7 : Hydrogen Bonding and Cohesion : Each molecule of _____ can form multiple _______ _____ with other water molecules. The strong __________ between produces a _____ sometimes called "_______ _______," which can support very ___________ objects such as this ____ ______.

water hydrogen bonds attraction force surface tension lightweight raft spider