Year 9 topic 1 Flashcards
What is an atom?
Atoms are made up of a nucleus containing protons and neutrons surrounded by electrons that are protected by shells. Also everything you touch be it your face or a brick is made up of atoms. An atom is close to being the smallest thing in the world after a quark.
What is a molecule?
Molecules are made up when two or more atoms are chemically bonded together. Atoms from different elements can also combine.
What is a compound?
A compound consists of atoms of different elements chemically combined together ,compounds form in a chemical reaction and only can be separated back into there original elements with another chemical reaction.
What is an element?
An element is a substance that is made up of only a single kind of atom, the atoms in a element are the same as all the other atoms in that single element and they aren’t the same as the other atoms in other elements.
What is an electron?
An electron is something inside an atom with has energy levels also known as electron shells, which are placed outside the nucleus. Different types of shells can hold a different number of electrons.
What is a proton?
A proton is the positively charged particles which are present in the nucleus of an atom. One or more protons are in the nucleus of every atom to exist in the world. Protons are always accompanied by a neutron or neutrons.
What is a neutron?
A neutron is a subatomic particle that forms the central nucleus of almost all atoms along with the protons. They have a neutral electric charge and have the same relative mass as a .positively charged proton
What is a Solution?
A solution is made up when a substance dissolves into a liquid creating the product an example is salt water when salt is mixed into the water.
What is a solvent?
The liquid in what the solution dissolves into is the solvent the solvent in the salt + water reaction would be salt water.
What is a solute?
In the reaction the solute is the actual material that dissolves, for example in the salt water mixture the solute is the water.
What is a balanced equation?
A balanced equation is an equation which has the same number of atoms of each elements on both side they must be equal or it os not balanced.
What is a reactant?
A reactant is the substance de that are inside a chemical reaction and are changed by the reaction and it is also when one or more substances are changed.
What is a product?
A product is the substance that has been created bye the end of the chemical reaction so in the salt water experiment the product would be the mixed salt water.
What is immiscible?
An immiscible liquid is a liquid which can not mix together or are not soluble in each other an example is oil and water.
What is miscible?
A miscible liquid is a liquid that can mix together for example water and Alchold.
