science test home work revision

Question 1

How is the periodic table arranged.

Answer 1

In order of increasing atomic number!

Question 2

What are the vertical columns in the periodic table called?

Answer 2

They are called groups!

Question 3

Where are the transition metals found in the periodic table?

Answer 3

They are found in the middle section of the periodic table.

Question 4

Are there more non-metals or more metals in the periodic table?

Answer 4

In the periodic table they’re more metals!

Question 5

Is hydrogen and metal or a non-metal in the periodic table?

Answer 5

Hydrogen is a non-metal

Question 6

What a the horizontal columns in the periodic table called?

Answer 6

They are called periods!

Question 7

What do most metals have in common?

Answer 7

Most metals are 1)shiny, especially when they are freshly cut 2)good conductors of heat and electricity 3)malleable (they can be bent and shaped without breaking)

Question 8

What is the only metal that is liquid at room temperature?

Answer 8

Mercury is the only metal that is a liquid at room temperature!

Question 9

What are the three elements that are magnetic?

Answer 9

The three metals that are magnetic are iron, cobalt and nickel!

Question 10

Is steel magnetic?

Answer 10

Yes but it is a mixture of elements (that is mostly steel.)

Question 11

What happens when a metal reacts with oxygen?

Answer 11

It creates a metal-oxide!

Question 12

What are the properties of non-metals?

Answer 12

The properties of non-metals include: dull (not shiny) poor conductors of heat and electricity (they are insulators) weak and brittle (they easily break or shatter when solid) Most non-metals also have these properties:

Question 13

How many non-metals are gases at room temperature?

Answer 13

They’re is 11 non-metals that are gases at room temperature!

Question 14

What is the only non-metal that is a liquid at room temperature?

Answer 14

Bromine is the only non metal liquid at room temperature!

Question 15

What can pure carbon exist as?

Answer 15

As diamonds or Graphite, but there is a difference between them, diamonds are hard while graphite is soft. diamonds are colourless, but graphite is black!

Question 16

What non-metal can conduct electricity?

Answer 16

Graphite

Question 17

What is the most reactive metal?

Answer 17

Potassium

Question 18

What is the least reactive metal?

Answer 18

Platinum

Question 19

Why is copper used to make water pipes?

Answer 19

As it unreactive

Question 20

What is Biological weathering?

Answer 20

It is when roots of a tree grow into the cracks of a rock and make the crack bigger!

Question 21

What is Chemical Weathering?

Answer 21

Weathering coursed by chemicals. When rains such as acid rain, rains upon rocks or stones and melts them or make then were away.

Question 22

What is physical weathering?

Answer 22

Physical weathering is coursed by physical process such as wind, changes in temperature freeze thawing and the sea.

Question 23

What are the three main rock types?

Answer 23

igneous (for example, basalt and granite) sedimentary (for example, limestone, sandstone and shale) metamorphic (for example, slate and marble)

Question 24

Explain the rock/lime cycle?

Answer 24

1) all rocks start of as magma 2) magma gets pushed to the top of a volcano and moves towards the sea. 3) after erosion and weathering the rocks get pushed down into the bottom of the sea and it gradually builds up. 4) Movements in the earth courses the rocks to move down and back toward the volcano. (creating Metaphoric rock) 5) When the rock reaches the bottom of the volcano it heats back up and melts back into lave.

Question 25

What are the properties of metamorphic rock?

Answer 25

Metamorphic rocks are formed under the surface of the earth from the metamorphosis (change) that occurs due to intense heat and pressure (squeezing). The rocks that result from these processes often have ribbonlike layers and may have shiny crystals, formed by minerals growing slowly over time, on their surface.

Question 26

what are the properties of sedimentary rocks ?

Answer 26

they are made from deposits of sand or dead sea creatures forming over millions years when they fall to the bottom of the oceans

Limestone is a good example , it has many colours and can be cut and shaped for walls and houses

Question 27

what are the properties of igneous rocks

Answer 27

they form from volcanic eruptions and come from the magma below the earths crust. They are hard and contain many minerals and elements such as iron. They are generally dark in colour, some times they are holey like a sponge due to gassses being trapped in the lava as the molten rock solidifes.