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Biblioteka

States of matter

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Posljednje ažuriranje about 1 year ago
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11
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Pitanje 1
1.

  • Solid

  • liquid

  • gas

Pitanje 2
2.

rrangement) Particles become further apart / more space between particles in a gas / no longer in contact with each other / move over a larger space (Movement) Move faster / more kinetic energy

  • Close together

  • further apart

  • vibrate in place

  • move most slowly

  • move most rapidly

  • most energy

  • least energy

  • regular arrangement

  • irregular arrangement

  • Solid

  • liquid

  • gas

Pitanje 3
3.

Match the description to the state

Note some descriptions describe more than one state.

  • has a fixed shape

  • takes the shape of the bottom of a the container

  • takes the shape of the container

  • can flow

  • can be compressed

  • diffusion is most rapid

  • in-compressible

  • diffusion is slowest

  • Solid

  • liquid

  • gas

Pitanje 4
4.

Pitanje 5
5.
Pitanje 6
6.

Note (aq) means dissolved in water.

Pitanje 7
7.
Pitanje 8
8.
Pitanje 9
9.

Variables

Independent variable =

Dependent variable =

Control variable =

Drugi mogući odgovor:
temperature
temperature of the water
mass
volume of water
mass of salt that dissolves
Pitanje 10
10.

Apparatus

Stavka koja se može prevućiarrow_right_altOdgovarajuća stavka

add potassium chloride

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mass balance

measure mass

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thermometer

measure 100 cm3 of water

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spatula

measure temperature

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measuring cylinder

Pitanje 11
11.

Method

  1. Measure the mass of the salt solution with a mass balance

  2. Add the water to the beaker

  3. Calculate the mass of salt using mass of salt water in beaker - mass of water in beaker

  4. Finally Repeat the experiment using different temperatures of water.

  5. Measure the mass of the water and beaker with a mass balance

  6. Measure the temperature of the water with a thermometer

  7. First Measure 100 cm3 of water using a measuring cylinder

  8. Add potassium chloride until no more will dissolve

Pitanje 12
12.

Results

Mass of KCl that dissolves in 100g of water at 0oC = g

Mass of NaCl that dissolves in 100g of water at 0oC = g

Temperature at which the solubility of NaCl and KCl are equal = oC

As the temperature increases the solubility of KCl

As the temperature increases the solubility of NaCl

At 10oC the solubility of NaCl is than the solubility of KCl.

Pitanje 13
13.

Magnesium oxide (MgO)

Pitanje 14
14.

Carbon monoxide (CO)

Pitanje 15
15.

Water (H2O)