Atoms, Water And Density

Question 1

Tightness across the surface of water is called?

Answer 1

Surface Tension

Question 2

Surface Tension is caused by?

Answer 2

Polar Molecules pulling on each other

Question 3

Tightness across the surface of water is called _____ and is caused by ____

Answer 3

• Surface Tension
• Polar molecules pulling on each other

Question 4

Water consists of what type of molecules?

Answer 4

Polar molecules

Question 5

Water molecules tend to ____ together

Answer 5

Stick

Question 6

When water freezes, the molecules ____

Answer 6

Expand

Question 7

Water is the only substance on Earth that ___

Answer 7

Commonly exists in all three phases

Question 8

____ allows the water to stick to a leaf

Answer 8

Adhesion

Question 9

The density of water is ____

Answer 9

1 g/mL

Question 10

____ is the chemical formula for water

Answer 10

H₂O

Question 11

H₂O is the chemical symbol for ____

Answer 11

Water

Question 12

The amount of heat energy needed to increase the temperature of a certain mass of water by 1^o C is called?

Answer 12

Specific heat

Question 13

The specific heat is the amount of energy needed to increase the temperature of a certain mass of water by ____

Answer 13

1^o

Question 14

Solution is the whole ___

Answer 14

Mixture

Question 15

The whole mixture is called

Answer 15

Solution

Question 16

Water’s resistance to temperature change is called?

Answer 16

Heat capacity

Question 17

Heat capacity is water’s ___?

Answer 17

Resistance to temperature change

Question 18

____ is the substance being dissolved

Answer 18

Solute

Question 19

Solute is the substance ____

Answer 19

Being dissolved

Question 20

____ does the dissolving

Answer 20

Solvent

Question 21

Solvent does the _____

Answer 21

Dissolving

Question 22

_____ is the water property that allows for the dome-like shape of water

Answer 22

Cohesion

Question 23

Cohesion is the water property that allows for the _____

Answer 23

Dome-like shape of water

Question 24

H₂O -> H₂ + O₂ is an _____ equation

Answer 24

Unbalanced

Question 25

____ water floats in liquid water because it is less dense than the liquid water

Answer 25

Solid water (ice)

Question 26

Solid water (ice) floats in liquid water because it is ____ dense than the liquid water.

Answer 26

Less

Question 27

_____ can be determined by mass/volume

Answer 27

Density

Question 28

Density can be determined by ____

Answer 28

Mass/volume

Question 29

Given the mass of an object is 4g and the volume is 2 mL, the density is ____ g/mL and it will ____ in liquid water

Answer 29

2 g/mL

Sink

Question 30

The charges of a water molecule are?

Answer 30

Hydrogen is negative
Oxygen is positive