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Chemistry KO Tests > Chemistry Term 3 KO Test > Flashcards

Chemistry Term 3 KO Test Flashcards

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1
Q

What is an atomic number?

A

An atomic number is the number of protons found in a nucleus.

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2
Q

What is boiling?

A

Boiling is a physical process of turning a solid to its liquid state by raising it above its boiling point.

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3
Q

What is a change of state?

A

A change of state is the process of turning a solid to liquid and a liquid to gas, and also the reverse of these processes.

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4
Q

What is a charge?

A

A charge is a property of matter, which can be positive or negative, which attract to each other.

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5
Q

What is condensation?

A

Condensation is the process of turning a gas to a liquid.

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6
Q

What is a decimal point?

A

A decimal point is a small dot that separates whole numbers from the value indicating the amount of 1/10s and 1/100s represented.

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7
Q

What is deposition?

A

Deposition is a physical process turning a gas directly into its solid state.

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8
Q

What is a diameter?

A

A diameter is the length of the largest line across a circle, the line that goes through the midpoint. Maximum width of a sphere.

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9
Q

Electron

A

Negatively charged subatomic with negligible mass.

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10
Q

What is an electron shell?

A

An electron shell is an area found around the nucleus that will probably hold electrons. It is not a physical ‘hard ring’ but an area where electrons may be ‘found’. An energy level

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11
Q

Who is Ernest Rutherford?

A

Ernest Rutherford is a Nobel Laureate scientist who worked in Manchester and Cambridge who proposed that the had a nucleus with electrons surround it and that the atom was working in empty space.

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12
Q

What is the Geiger and Marsden experiment?

A

It is an experiment that used the scattering of alpha particles on gold leaf to suggest that some particles were deflected by large concentration leading to the idea of an atom with a nucleus.

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13
Q

What is an Isotope?

A

An isotope is an atom with the same number of protons but different number of electrons.

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14
Q

Who is J.J Thomson?

A

J.J Thomson is the person who discovered the electron and the ‘plum pudding’ model of an atom.

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15
Q

Who s James Chadwick?

A

James Chadwick is the scientist that suggested that discovered the neutron.

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16
Q

Who is John Dalton?

A

John Dalton is the scientist that suggested that atoms were small like billiard balls.

17
Q

What is magnitude?

A

Magnitude is the size of something.

18
Q

What is a mass number?

A

Mass number is the combined total number of protons and neutrons in the nucleus of an atom.

19
Q

What is a nanometre?

A

A nanometre is a unit used to measure very small things (one billionth of a metre).

20
Q

What does negligible mean?

A

Negligible means that something is so small that it isn’t significant; essentially zero.

21
Q

What does neutral mean?

A

Neutral means having no overall charge.

22
Q

What is a neutron?

A

A neutron is a small particle which does not have a charge found in the nucleus of an atom.

23
Q

Who is Niels Bohr?

A

Niels Bohr is the scientist that proposed that electrons orbit the nucleus in fixed orbits called shells.

24
Q

What is the nucleus?

A

The nucleus is the central part of an atom that contains protons and neutrons.

25
Q

What is a proton?

A

A proton is the small positive particle found in the nucleus of an atom.

26
Q

What is a radius?

A

A radius is the straight line from the circumference to the edge of a sphere.

27
Q

What is relative atomic mass?

A

Relative atomic mass is the average mass of an atom compared to the mass of 1/12th of a carbon-12 atom.

28
Q

What is standard form?

A

Standard form is a way of writing very large numbers with one number before the decimal point multiplied by a power of 10.

29
Q

What is sublimation?

A

Sublimation is the process of turning a solid directly into its gaseous state.

30
Q

What is a symbol?

A

A symbol is a way of representing elements, consists of one or two letters.

Chemistry KO Tests (1 decks)

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