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N5 Chemistry > Unit 1-Chemical Changes And Structures > Flashcards

Unit 1-Chemical Changes And Structures Flashcards

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1
Q

As the temperature of reaction increases…

A

The rate of reaction increases

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2
Q

The higher the concentration…

A

The faster the reaction

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3
Q

The smaller the particle size…

A

The faster the reaction

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4
Q

What is a catalyst?

A

Catalyst change the rate of a reaction but are not used up in the reaction

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5
Q

What are the three stages of a reaction when catalysts are used

A

Adsorption, reaction, desorption

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6
Q

How do you calculate the average rate of reaction

A

Average rate= change in mass/change in time

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7
Q

What are the three parts of an atom?

A

Electrons, protons, neutrons

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8
Q

What is the relative mass, charge and location of the electron?

A

Zero, negative one, energy level

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9
Q

What is the relative mass, charge and location of protons?

A

One, positive one, nucleus

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10
Q

What is the relative mass, charge and location of the neutron?

A

One, no charge, nucleus

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11
Q

What is an isotope?

A

Isotopes are atoms of the same atomic number but different mass numbers

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12
Q

What is an ion?

A

An ion is a charge particle and formed when atoms lose or gain electrons

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13
Q

What is a molecule?

A

Molecules are non-metal compounds join together by covalent bonds

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14
Q

What is a covalent bond?

A

A covalent bond is a shared pair of electrons between two non-metal atoms

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15
Q

Explain how covalent bonding works?

A

Atoms are held together because of the electrostatic force of attraction between the positive nuclei of each atom and the negatively charged electrons.

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16
Q

What is ionic bonding?

A

Ionic bonds are the electrostatic forces of attraction between positive and negative ions

17
Q

What are the four things that can change the rate reaction?

A

temperature, concentration, particle size, use of a catalyst

18
Q

What is the structure of an ionic compound?

A

And ionic lattice structure

19
Q

Ionic compounds conduct electricity when…

A

They are in solution or in a melt

20
Q

What is the equation for calculating mass in grams?

A

M=nxgfm

21
Q

What is equation to work out the concentration of a solution?

A

C=n/v

22
Q

What is the functional group of an acid?

A

H+ ion

23
Q

What is the functional group of the alkalis?

A

OH ion

24
Q

How do you form an acid?

A

By dissolving a non-metal in water

25
Q

How do you form an alkali?

A

By dissolving a metal oxide in water

26
Q

What is the product of a neutralisation reaction?

A

Salt and water

27
Q

What is the product when acids react with metal carbonates?

A

Salt, water and carbon dioxide

N5 Chemistry (3 decks)

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