Y8 Science Term 2 Chapter 6

Question 1

What are atoms?

Answer 1

Every substance in the universe is made up of atoms. Atoms are the building block of life

Question 2

How many atoms are there

Answer 2

There are only 100 atoms known to the univers however they can be arranged in different combination to create diffrenet substances

Question 3

What is an element

Answer 3

An element is a substance that is only made up of one type of atom for example gold is a elemnt becuase it’s made up of only gold particles.

Question 4

What are some examples of metallic elements

Answer 4

Some examples of metallic elements are
- Gold
- Silver
- Alumimium
- Mercury

Question 5

What are some Charteristics of Metal

Answer 5

• Tends to be shiny (Also known as Lustrous)
• are solid in room tempriture except mercury
• Good conducters of heat and electricity
• Can be hammered into sheets (Also kown as malleable)
• Can be streched into wires (Aslo known as ductile)

Question 6

How many elements are there on the periotic table

(Also answer how many are naturally occuring)

Answer 6

118 element however only 98 are natural

Question 7

What are
- Monatomic
- Molecules
- Lattices

Answer 7

Monatomic atoms are just a singular atom. There are only 6 of the 98 naturally occuring elements.

Molecular elements are clusters of two or more atoms bonded together. In a moleular elements all the molecules are identical with the same shape, number, and type of atoms

Lattices are large grid-like structures that repeat the same arrangement of atoms over and over. All metallic element form crystal lattices only a few non-meatallic elements form rystal lattices

Question 8

What are most compounds

Answer 8

Are a made from 2 or more molecules

Question 9

What are Molecular compounds

Answer 9

All molecules in a coompound are identical in size shape and number of atoms. Many molecules are small on only contain just a few atoms. Each molecule is made by combining diffenrent types of the same elements:Oxygen, Hydrogen, and carbon

Question 10

What are mixtures

Answer 10

Mixtures are two or more ingredents mixed however it’s not chemically mixed

Question 10

Compounds lattices

Answer 10

Cpmpounds can also form crystal lattices. In these lattices the atoms are bonded very strongly together so it tends to be solid at room temperature two of the most common lattices are table salt and beach sand

Question 11

What is Solute and Solvent

Answer 11

Solute is the dissolving solid
while
the liquid that the solute dissolves into is the Solvent

Question 12

What are Alloys

Answer 12

Alloys are a mixture of metals with other metals or non-metals