Chapter 7- Material properties Flashcards
Name some every day materials
Plastic, metals, fabrics, wood, pottery, glass, paper, cardboard, brick and concrete
What are physical properties
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
Give an example of a material and its physical properties And an opposite material with its physical properties
An electrical conductor, that’s at electricity pass through it
And electrical insulator, does not like electricity pass through it.
What’s the definition of an element
A substance that is made up of one type of Atom
Give an example of an element
Hydrogen, Carbon, Potassium, sodium
Go into your photos and study the property, metal, nonmetal
How well did you know this table
What are the chemical properties of substance
Chemical properties of a substance other way it behaves in chemical reactions with other substances
What happens when chemical reactions occur, give an example
Substances change into another substance, When iron and sulfur I hate it together they have a chemical reaction which produces compound called iron sulfide
The action between metal and oxygen forms a…
Metal oxide
Why is the metal oxide called the base
Because it can take part in a chemical reaction with an acid and neutralize it
Metal oxide that can dissolve in water are called…
Alkalis
What does the reaction of a nonmetal with oxygen form
A nonmetal oxide
Most non-metal oxide dissolves in water to form
Acid
What does an element it’s physical and chemical properties
The structure of the atom
What was Ernest Rutherford’s theory
He needs it an atom did not have a negative charge so they might say something else present cancel out the negative charges
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?
He set up a thin sheet of gold surrounded by screen that could detect particle-a
From his experiment he described as a as having a…
Central positively charged nucleus surrounded by a cloud of negatively charged electrons
What is the atomic nucleus contain
Protons and neutrons
What does group one of the periodic table contain
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
What does group 2 of the periodic table contain
Alkaline earth metals
What does group 7 of the periodic table
Halogens
What does an element have that is unique to each element
It’s own particular properties
What is a compound
A substance that is formed by two or more elements which have joined together as the result of a chemical reaction
What are the difference between a compound an element
The physical and chemical properties of a compound a different to the physical and chemical properties of the element from which it is formed
What is a mixture
A mixture is made up of two or more substances the substances can be either elements or compounds or both elements and compounds
What happens to the substances in a mixture
They keep their own physical and chemical properties
Give evidence of an experiment that shows substances in a mixture keep their own physical and chemical properties
If you mixed iron with sulfur you could separate it using a magnet
What are some ways substances In a mixtures can be separated
Filtering, boiling and condensing
Describe the process of filtration
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
Describe distillation
You can boil off the The liquid and you’re left with the residue
