Atoms, Water And Density Flashcards

1
Q

Tightness across the surface of water is called?

A

Surface Tension

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2
Q

Surface Tension is caused by?

A

Polar Molecules pulling on each other

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3
Q

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

A
  • Surface Tension
  • Polar molecules pulling on each other
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4
Q

Water consists of what type of molecules?

A

Polar molecules

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5
Q

Water molecules tend to ____ together

A

Stick

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6
Q

When water freezes, the molecules ____

A

Expand

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7
Q

Water is the only substance on Earth that ___

A

Commonly exists in all three phases

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8
Q

____ allows the water to stick to a leaf

A

Adhesion

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9
Q

The density of water is ____

A

1 g/mL

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10
Q

____ is the chemical formula for water

A

H2O

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11
Q

H2O is the chemical symbol for ____

A

Water

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12
Q

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

A

Specific heat

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13
Q

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

A

1o

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14
Q

Solution is the whole ___

A

Mixture

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15
Q

The whole mixture is called

A

Solution

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16
Q

Water’s resistance to temperature change is called?

A

Heat capacity

17
Q

Heat capacity is water’s ___?

A

Resistance to temperature change

18
Q

____ is the substance being dissolved

19
Q

Solute is the substance ____

A

Being dissolved

20
Q

____ does the dissolving

21
Q

Solvent does the _____

A

Dissolving

22
Q

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

23
Q

Cohesion is the water property that allows for the _____

A

Dome-like shape of water

24
Q

H2O -> H2 + O2 is an _____ equation

A

Unbalanced

25
____ water floats in liquid water because it is less dense than the liquid water
Solid water (ice)
26
Solid water (ice) floats in liquid water because it is ____ dense than the liquid water.
Less
27
_____ can be determined by mass/volume
Density
28
Density can be determined by ____
Mass/volume
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
2 g/mL Sink
30
The charges of a water molecule are?
Hydrogen is negative Oxygen is positive