Chapter 7- Material properties

Question 1

Name some every day materials

Answer 1

Plastic, metals, fabrics, wood, pottery, glass, paper, cardboard, brick and concrete

Question 2

What are physical properties

Answer 2

Physical properties of material are the features it possesses that can be investigated by observation or by simple experiments which do not involve chemical reactions

Question 3

Give an example of a material and its physical properties And an opposite material with its physical properties

Answer 3

An electrical conductor, that’s at electricity pass through it
And electrical insulator, does not like electricity pass through it.

Question 4

What’s the definition of an element

Answer 4

A substance that is made up of one type of Atom

Question 5

Give an example of an element

Answer 5

Hydrogen, Carbon, Potassium, sodium

Question 6

Go into your photos and study the property, metal, nonmetal

Answer 6

How well did you know this table

Question 7

What are the chemical properties of substance

Answer 7

Chemical properties of a substance other way it behaves in chemical reactions with other substances

Question 8

What happens when chemical reactions occur, give an example

Answer 8

Substances change into another substance, When iron and sulfur I hate it together they have a chemical reaction which produces compound called iron sulfide

Question 9

The action between metal and oxygen forms a…

Answer 9

Metal oxide

Question 10

Why is the metal oxide called the base

Answer 10

Because it can take part in a chemical reaction with an acid and neutralize it

Question 11

Metal oxide that can dissolve in water are called…

Answer 11

Alkalis

Question 12

What does the reaction of a nonmetal with oxygen form

Answer 12

A nonmetal oxide

Question 13

Most non-metal oxide dissolves in water to form

Answer 13

Acid

Question 14

What does an element it’s physical and chemical properties

Answer 14

The structure of the atom

Question 15

What was Ernest Rutherford’s theory

Answer 15

He needs it an atom did not have a negative charge so they might say something else present cancel out the negative charges

Question 16

What if it was involved with the discovery of large positively charged particles called a -particles
He use them to investigate atomic structure how did he do this?

Answer 16

He set up a thin sheet of gold surrounded by screen that could detect particle-a

Question 17

From his experiment he described as a as having a…

Answer 17

Central positively charged nucleus surrounded by a cloud of negatively charged electrons

Question 18

What is the atomic nucleus contain

Answer 18

Protons and neutrons

Question 19

What does group one of the periodic table contain

Answer 19

The alkali metals

Go and study in your photos where the group 1 and group to and group 7 are placed on the periodic table

Question 20

What does group 2 of the periodic table contain

Answer 20

Alkaline earth metals

Question 21

What does group 7 of the periodic table

Answer 21

Halogens

Question 22

What does an element have that is unique to each element

Answer 22

It’s own particular properties

Question 23

What is a compound

Answer 23

A substance that is formed by two or more elements which have joined together as the result of a chemical reaction

Question 24

What are the difference between a compound an element

Answer 24

The physical and chemical properties of a compound a different to the physical and chemical properties of the element from which it is formed

Question 25

What is a mixture

Answer 25

A mixture is made up of two or more substances the substances can be either elements or compounds or both elements and compounds

Question 26

What happens to the substances in a mixture

Answer 26

They keep their own physical and chemical properties

Question 27

Give evidence of an experiment that shows substances in a mixture keep their own physical and chemical properties

Answer 27

If you mixed iron with sulfur you could separate it using a magnet

Question 28

What are some ways substances In a mixtures can be separated

Answer 28

Filtering, boiling and condensing

Question 29

Describe the process of filtration

Answer 29

A solid and a liquid can be created using a filter paper for the mixture into the felt paper and the water will escape through the very small holes in the filter paper and the solid will be held back

Question 30

Describe distillation

Answer 30

You can boil off the The liquid and you’re left with the residue