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Chemistry > C2 F4 > Flashcards

C2 F4 Flashcards

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1
Q

Matter

A

Something that has mass and occupies space.

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2
Q

Element

A

Substances that only consist of one type of atom

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3
Q

Compound

A

Substances that consist of more than one element that form a molecule

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4
Q

Physical States of Matter (solid)

A

Packed very closely
Vibrate at a fixed position
Kinetic Energy low
force of attraction strong

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5
Q

Physical States of Matter (liquid)

A

Packed closely but have empty space between them
Move randomly
force of attraction moderate
Kinetic Energy moderate

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6
Q

Physical States of Matter (gas)

A

Particle very far apart
Move randomly
force of attraction weak
Kinetic Energy low

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7
Q

heating(slanting)

A

Heat is absorbed
kinetic energy of solid/liquid/gas particles increases
particles vibrate and rotate faster
temp increases

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8
Q

Horizontal line(melting/boilling)

A

Melting/boilling process take place
all the heat is absorbed is used to overcome force of atraction between solid/liquid particles
kinetic energy of particles remain constant
temp constant

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9
Q

Function of oil/water bath

A

ensure uniform heating

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10
Q

Cooling(slanting)

A

Heat is released to surroundings
kinetic energy of solid/liquid/gas particles decreases
particles vibrate and rotate/move slower
temp decreases

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11
Q

Horizontal line(freezing and condensation)

A

heat lost to surroundings is equal to heat released during formation of attraction between gas/liquid particles
kinetic energy of particles remain constant
temp constant

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12
Q

Definition of Isotopes

A

Atoms of the same element that have the same number of protons but a different number of neutrons.

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13
Q

Carbon-14

A

Estimation of artifacts or fossils’ age

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14
Q

Cobalt-60

A

kill cancer cells

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15
Q

Sodium-24

A

In detecting leakage in underground pipes

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16
Q

Uranium-235

A

use as fuel in power plant

17
Q

Iodine-13

A

detect and treat thyroid diseases

18
Q

Phosphorus-32

A

Study of plant metabolism

19
Q

Definition of Natural Abundance

A

The percentage of isotopes present in a natural sample of an element.

20
Q

Formula for Relative Atomic Mass

A

Relative atomic mass=

Σ(%Isotope ×Mass of isotope)\100
​

Chemistry (8 decks)

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