Water and Chemical Reactions Flashcards

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1
Q

The oxygen side of water has this kind of charge.

A

Slightly negative

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2
Q

Because water has an equal number of protons and electrons, it is described as this.

A

Neutral

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3
Q

The hydrogen side of water is slightly positive because of these.

A

Protons in the hydrogen nuclei are positive

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4
Q

This is the attraction of water molecules to water molecules.

A

Cohesion

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4
Q

In water, the electron cloud swarming mostly around oxygen has this charge.

A

Negative

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5
Q

Cohesion causes this.

A

Surface Tension

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6
Q

In water, this has a greater force of attraction of electrons than the hydrogen nuclei.

A

The oxygen nucleus, because it has 8 protons attracting the electron cloud while the hydrogen each only have 1 proton attracting electrons.

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7
Q

Adhesion is the attraction of water to . . .

A

molecules OTHER than water.

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8
Q

This is what happens to bonds during chemical reactions.

A

Bonds are broken &/or formed.

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9
Q

Reactants get turned into these during chemical reactions.

A

Products

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10
Q

This is what happens to atoms during chemical reactions.

A

They are rearranged.

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11
Q

This is the name for those substances that BEGIN a chemical reaction.

A

REACTANTS

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12
Q

This is the name of the substances that are generated in a chemical reaction.

A

PRODUCTS

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13
Q

This is another name for a chemical change.

A

Chemical reaction

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14
Q

During chemical reactions, energy levels can change but the amount of matter . . .

A

remains constant.

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15
Q

These reactions build products of HIGHER potential energy.

A

Endothermic

16
Q

Stored energy is called this.

A

Potential Energy

17
Q

This is the term used to describe the energy needed to start a chemical reaction.

A

Activation Energy

18
Q

This is energy that is in use.

A

Kinetic Energy

19
Q

These reactions release more energy than they absorb.

A

Exothermic reactions

20
Q

This type of reaction ALWAYS requires activation energy.

A

Endothermic

21
Q

This reactions most often occur spontaneously.

A

Exothermic