P3- Particle Model Of Matter Flashcards

1
Q

Describe the structure and arrangement of particles in a solid.

A

The particles are packed closely together and can only vibrate in a set position. The particles usually form a regular and specific pattern.

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2
Q

Describe the structure and arrangement of particles in a liquid.

A

The particles are close together. The particles vibrate, move and slide past each other and are arranged in an irregular pattern.

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3
Q

Describe the structure and arrangement of particles in a gas.

A

The particles are far apart and are in constant random motion. The particles move quickly in a random direction. They have the most kinetic energy.

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4
Q

What is the definition for boiling point?

A

The temperature at which liquid turns into a gas.

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5
Q

What does internal energy mean?

A

The total energy in the kinetic and potential stores of all the particles (atoms and molecules) that make up a system.

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6
Q

What does specific latent heat of fusion mean?

A

The energy required to change 1 kg of a substance from a solid to a liquid with no temperature change.

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7
Q

What does specific latent heat of vaporisation mean?

A

The energy required to change 1 kg of a substance from a liquid to a gas with no temperature change.

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8
Q

What does density mean?

A

The mass per unit volume of a material. It can be four of us representing how tightly packed the particles are within a given volume.

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9
Q

What equation links density, mass and volume?

A

Density= mass/volume

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10
Q

How can you measure the volume of an irregular object?

A

By placing it in a Eurika can and the water is collected in a separate beaker are using a measuring cylinder displace in the water and seeing the volume it displaces.

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11
Q

How can you measure the volume of an regular object?

A

Use a ruler to measure the dimensions of the object.

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12
Q

What is the difference between heat and temperature?

A

Temperature is a measure of average kinetic energy of molecules.
Heat is the total kinetic and potential energy obtained by molecules in an object.

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13
Q

What happens to the particles in a gas heated?

A

The particles gain kinetic energy and on average move faster. This causes the pressure of the gas to increase because the particles collide more often from the container surface and with more force.

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