Science

Question 1

What is a solids?

Answer 1

Solids-Are regular in their arrangement (organised).All particles are touching and vibrate from a fixed position or shape. They have little Kinetic energy and has a fixed volume.

Question 2

What is Liquids?

Answer 2

Liquids-Are irregular in arrangement (random) still touching.They can move around more around more freely. They have more Kinetic energy than solids and it can be poured.

Question 3

What is Gases?

Answer 3

Gases-Have no arrangements the particles move quickly and they have lots of kinetic energy and it’s easy to compressed.

Question 4

What is compression?

Answer 4

Compression-How something can be squashed.

Question 5

What is volume?

Answer 5

Volume-How much can be held.

Question 6

What is shape?

Answer 6

Shape-What it looks like.

Question 7

Which state of matter can be compressed?

Answer 7

Gas

Question 8

Which state of matter has a fixed shape?

Answer 8

Solid

Question 9

Which state of matter has the weakest intermolecular forces?

Answer 9

Gas

Question 10

Which state of matter has the least energy?

Answer 10

Solid

Question 11

Give a property of solids that is also a property of liquids

Answer 11

Fixed volume

Question 12

What does sublimation mean?

Answer 12

Sublimation-Heated up enough to go from Solid-Gas

Question 13

What does deposition mean?

Answer 13

Deposition-Cooled enough Gas-Solid

Question 14

What does Evaporation mean?

Answer 14

Evaporation happens at any temperature the melting and boiling point and only happens at the surface.Boiling only occurs at the boiling point.

Question 15

Changing state

Answer 15

Melting Evaporating
➡️ ➡️
🟣🟣🟣 🟣🟣🟣 🟣 ➡️
🟣🟣🟣 🟣🟣 🟣➡️
🟣🟣🟣 🟣🟣 ⬅️🟣
Solid Liquid Gas
Freezing Condensing
⬅️ ⬅️

Question 16

What is melting point?

Answer 16

Melting point: The fixed temperature at which a pure solid substance turns from a solid to a liquid.

Question 17

What is a boiling point?

Answer 17

Boiling point: The fixed temperature at which a pure liquid turns from a liquid into a gas.
For both point:The melting and boiling point will depend of substance.

Question 18

Look at the diagram

Question 19

Calculate density

Answer 19

Density = mass➗volume
g/cm3 g cm3
g or kg=grams or kilograms mg=milligram 1000g=1kg 1000mg=1g cm3=centimetres cubed m3=metre cubed g/cm3=grams percentimetre cubed

Question 20

Every model

Answer 20

E-quation Density = Mass ➗ Volume
V-alues X = g/kg ➗ cm3/m3
E-nter values (correct place)
R-esults ___
Y-units = ___g/cm3

Question 21

Archimedes Theory

Answer 21

1.Use the balance to measure the mass
of your object.
2.Write the result in your table.
3.Fill the Eureka can until the water is
just below the spout.
4.Hold the measuring cylinder under
the spout.
5.Carefully place the object in the eureka