Basic Chemistry & Properties of Water Review

Properties of Water

Multiple Choice

One property of water that makes it unique is that it's SOLID FORM IS LESS DENSE THAT IT'S LIQUID form. Which example describes a result of this property?

• Trees transport water from their roots to their leaves.

• Fish in arctic water can swim under the ice layer to survive.

• Water strider insects walk on the surface of liquid pond water.

Multiple Choice

Water is an excellent ___________ because it can DISSOLVE most substances.

• evaporator

• solvent

• trap

Multiple Choice

Water helps MODERATE THE CLIMATE AROUND LARGE BODIES OF WATER. As a result, the temperatures in these areas are more MILD than inland where the temperatures are more extreme. This is due to water's _____________.

• high specific heat

• surface tension

• mass

Multiple Choice

The WEAK bond that holds TWO DIFFERENT WATER MOLECULES TOGETHER is called a(n) ____ bond.

• ionic

• covalent

• hydrogen

Multiple Choice

A water molecule is considered a(n) ____________ molecule because ONE END HAS A CHARGE THAT IS OPPOSITE the other end.

• covalent

• polar

• ionic

Multiple Choice

Which statement correctly describes one way that the PROPERTIES OF WATER AFFECT HEAT AND TEMPERATURE?

• Water absorbs heat when it freezes, helping to insulate lakes and ponds from cold temperatures.

• Water keeps more heat than other materials, making coastal ecosystems warmer all year.

• Water releases heat when it vaporizes (evaporates), this helps to keep animals cool by sweating or panting.

Multiple Choice

One of the many unique properties of water is that its solid form (ice) is LESS DENSE THAN ITS LIQUID FORM. Most substances become more dense when in solid form, because their molecules are more tightly compact. Why is this property of water so IMPORTANT TO LIFE on Earth?

• it allows water to travel up plants and distribute water to stems and leaves

• ocean water temperature doesn't fluctuate as much due to its high specific heat

• surface water freezes and insulates the water below for marine life

Multiple Choice

The PAPER CLIP, which is more dense than water, FLOATS ON THE SURFACE because of water's surface tension. Surface tension is a property of water that is the result of POLAR WATER MOLECULES STICKING TOGETHER or water's property of _____________.

• cohesion

• adhesion

• bouyancy

Multiple Choice

When water is being transported FROM THE ROOTS TO THE LEAVES of a plant or tree, water TRAVELS UP to replace lost water. This is due to ______.

• capillary action

• density of water

• collusion

Multiple Choice

Water striders have adaptations that help them escape predators by walking on top of the water. The reason they can WALK ON WATER is because ________.

• The water striders are LESS DENSE than the water, so they float on top.

• They use their WINGS TO HOVER just slightly above the water.

• The SURFACE TENSION of the water and their FLAT FEET allow them to stay on top of the water.

Multiple Choice

Water takes MORE HEAT to change its temperature. Which property does this describe?

• cohesion

• high specific heat

• evaporation of water

Multiple Choice

SWEAT COOLS us off because of this property. Which property of water does this describe?

• adhesion

• cohesion

• evaporative cooling

Multiple Choice

The ability of WATER to STICK TOGETHER. Which property does this describe?

• cohesion

• adhesion

• capillarity

Multiple Choice

The ability of WATER to STICK TO ANOTHER SURFACE. Which property does this describe?

• cohesion

• adhesion

• capillary action

Multiple Choice

If sodium has 11 PROTONS and is a +1 ion, then it would have _______ ELECTRONS.

• 10

• 11

• 12

Multiple Choice

Atoms must combine so that their outer energy level is full of electrons. When TWO or MORE ATOMS combine, it creates a(n) ____________.

• element

• molecule

• compound

Multiple Choice

Which of the following would be a MOLECULE, but NOT a COMPOUND?

• NaCl

• H2O

• O2

Multiple Choice

An ELEMENT is determined based on the number of _____ that it has.

• protons

• neutrons

• electrons

Multiple Choice

What is the name of a SUBSTANCE that CANNOT BE BROKEN DOWN into any simpler forms of matter?

• compound

• molecule

• element

Multiple Choice

Which particle is large and has a positive charge?

• proton

• neutron

• electron

Multiple Choice

Which particle is large and has a neutral charge?

• proton

• neutron

• electron

Multiple Choice

Which particle is small and has a negative charge?

• proton

• neutron

• electron

Multiple Choice

What is the maximum number of electrons that the 1st energy level can hold?

• 2

• 8

• 18

Multiple Choice

What is the maximum number of electrons that the 2nd energy level can hold?

• 2

• 8

• 18

Multiple Choice

If a NEUTRAL atom LOSES an ELECTRON, the atom will become ________.

• a positive ion

• a neutral ion

• a negative ion

Multiple Choice

If an element has 5 electrons in the 2nd energy level, how many more electrons are needed to fill this energy level?

• 2

• 3

• 5