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Exam Prep Flashcards

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Biology 101 flashcards
1
Q

What is the half life of Technetium-99m

A

6 hours

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2
Q

What is a main isotope used in medicine

A

Technetium 99m

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3
Q

What element does Technetium 99m come from

A

Molybdenum

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4
Q

What element does the thyroid like

A

Iodine

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5
Q

What are isotopes used for in medicine

A

Diagnostics, injected, CT scan detects radiation
Firing radiation at cancer cells

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6
Q

What happens if electricity is run through noble gases

A

Light

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7
Q

What are the most reactive non metals

A

Halogens

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8
Q

What is the most reactive element

A

Francium

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9
Q

What does ductile mean

A

It can be drawn into a wire

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10
Q

What are some properties of metals

A

Shiny, ductile, solid at room temperature

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11
Q

What are some properties of non metals

A

Dull, gas at room temperature

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11
Q

Who was the first person in the history of atomic theory

A

Democritus

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12
Q

What did Democritus do

A

Had the original idea of indivisible atomos

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12
Q

Who was the second person in the history of atomic theory

A

John Dalton

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13
Q

What did John Dalton do

A

Atoms of a particular element differ from other elements

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14
Q

Who was the third person in the history of atomic theory

A

J.J. Thomson

15
Q

What did J.J. Thomson do

A

Discovered electrons, plum pudding model

16
Q

Who was the fourth person in the history of atomic theory

A

Ernest Rutherford

17
Q

What did Ernest Rutherford do

A

Fire positively charged alpha particles at gold foil. Atom is mostly empty space with most of the mass in the nucleus

18
Q

Who was the fifth person in the history of atomic theory

A

Niels Bohr

19
Q

What did Niels Bohr do

A

Electrons move around nucleus in orbits of fixed sizes and energies. We use the Bohr model

20
Q

Who developed the current periodic table, organising elements by atomic number

A

Demetri Mendeleev

21
Q

What bond is non metal to metal

A

Ionic

22
Q

What is the strongest bond

A

Ionic

23
Q

What bond is non metal to non metal

A

Covalent

24
Q

What are the rows on the periodic table called

A

Periods

25
Q

What are the columns on the periodic table called

A

Groups

26
Q

What are elements with similar properties called

A

Families

27
Q

Where do you find the most reactive metals

A

Bottom left

28
Q

How are rows organised

A

According to increasing atomic number

29
Q

How are groups organised

A

According to size and electrons in outer shell

30
Q

What does alpha decay look like

A

A helium nucleus - 2 protons, 2 neutrons

31
Q

What does beta decay look like

A

An electron, +1 atomic number

32
Q
A

Science (3 decks)

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