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Science > Chemical Reactions > Flashcards

Chemical Reactions Flashcards

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1
Q

What is the chemical formula for carbon dioxide?

A

CO2

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2
Q

What is the chemical formula for hydrogen gas?

A

H2

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3
Q

What is the chemical formula for Hydrochloric acid?

A

HCl

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4
Q

What is the chemical formula for common salt (sodium chloride)

A

NaCl

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5
Q

What are reactants?

A

The substances you begin with in a chemical reaction

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6
Q

What are products?

A

The new substances formed/made in a chemical reaction

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7
Q

A chemical reaction takes place when ______

A

The bond between two atoms is broken and a new one is formed

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8
Q

What is formed in a chemical reaction?

A

At least one new substance

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9
Q

What does ‘endo’ mean?

A

Absorb

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10
Q

What is the chemical formula for Water?

A

H2O

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11
Q

What does ‘exo’ mean?

A

Release

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12
Q

Endothermic reactions make their surroundings ______

A

Colder

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13
Q

Exothermic reactions make their surroundings _______

A

Warmer

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14
Q

What is an example of an exothermic reaction?

A

Lighting a match

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15
Q

What is an example of an endothermic reaction?

A

Cooking an egg

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16
Q

What does an exothermic reaction transfer to its surroundings?

A

Energy

17
Q

What is cellular respiration?

A

When glucose reacts with oxygen to produce energy

18
Q

In cellular respiration, energy required by your body is released when ____

A

(The fuel) Glucose reacts with oxygen

19
Q

Where does cellular respiration take place?

A

In every cell of your body

20
Q

What is the worded equation for cellular respiration?

A

Glucose + Oxygen —–> CO2 + H2O + energy

21
Q

What is a combustion reaction?

A

A reaction where one of the reactants is oxygen. Without the oxygen, the flame will not burn

22
Q

What is a combustion reactions reactant?

A

Oxygen

23
Q

The substance that reacts with oxygen in a combustion reaction is called its _________

A

Fuel

24
Q

What is required for a combustion reaction?

A

A fuel and oxygen

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