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Module 2 - physics > Matter > Flashcards

Matter Flashcards

1
Q

What charge do protons, neutrons and electrons have?

A

Protons: +
Neutrons: No charge
Electrons: -

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2
Q

What are the three states of matter?

A

Solids, liquids and gasses

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3
Q

What is a molecule?

A

2 or more atoms joined together.

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4
Q

What is a compound?

A

When you have 2 or more DIFFERENT atoms.

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5
Q

What is the mass of both protons and neutrons?

A

1.67 x 10^-27

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6
Q

Where are protons and neutrons found?

A

Nucleus

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7
Q

Where are electrons found?

A

Outer layer

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8
Q

What is an ion?

A

An atom or molecule with an electric charge due to the loss or gain of electrons

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9
Q

How many electrons are allowed in each shell?

A

1st shell: 2
2nd shell: 8
3rd shell: 18
4th shell: 32

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10
Q

What is an isotope?

A

Two elements with the same number of protons but a different atomic mass

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11
Q

What are valence electrons ?

A

Outer most electrons. (Electrons in the outer shell)

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12
Q

How many valence electrons are in insulators?

A

More than half (4)

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13
Q

How many valence electrons in a semi conductor?

A

4

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14
Q

How many valence electrons in a conductor?

A

Less than 4 (1-3)

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15
Q

List the properties of solids

A
  • greatest density
  • fixed surface and volume
  • difficult to compress
  • can only expand a little
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16
Q

List the properties of a liquid

A
  • greater density than gasses
  • flow freely
  • have a surface and fixed volume
  • not readily compressed
  • expand on heating
17
Q

List the properties of a gas

A
  • low density
  • no surface or fixed shape
  • readily compressed
  • expand on heating
  • gain kinetic energy
18
Q

What are the changes of state?

A

Evaporation, condensation, liquidation and solidification and
Sublimation

19
Q

What is sensible heat?

A

Heat removed that causes a drop in temperature.

20
Q

What is latent heat ?

A

heat removed (condensation or solidification) or added (fusion) that causes changed statements

Module 2 - physics (7 decks)

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