Last minute cards Flashcards
What type of oxides produce alkalis when in solution?
Soluble metal oxides
What type of oxides produce acids in solution?
Soluble non-metal oxides
What is the word equation for making a metal hydroxide?
metal oxide + water –> metal hydroxide (alkali)
What metal oxides are soluble in water?
Metal oxides from groups 1 and 2
What is the formula for hydrochloric acid and what type of salt does it make?
HCL(aq) - chloride
What is the formula for nitric acid and what type of salt does it make ?
HNO3(aq) - nitrate
What is the formula for sulphuric acid and what salt does it make?
H2SO4(aq) - sulfate
What is the formula for phosphoric acid and what salt does it make?
H3PO4(aq) - phosphate
What is the equation for pure water?
H2O (l) H+(aq) + OH-(aq)
Where does a salts name come from?
1st part - metal
2nd part - acid
What is the word equation for the reaction or a metal and an acid?
reactive metal+acid–>salt+hydrogen
What is the word equation for the reaction of a metal carbonate and acid?
Metal carbonate+acid–>salt+water+carbon dioxide
What is the word equation for the reaction of a metal oxide and an acid?
Metal oxide+acid–>salt+water
What is the word equation for the reaction of a metal hydroxide and an acid?
Metal hydroxide+acid–>salt+water
Name 4 metals that do not react with dilute acid
Cu
Ag
Au
Pt
What is the 3 natural forms of calcium carbonate?
chalk
limestone
marble
Why is an indicator used in a titration?
So that the end point is visible
What does concordant results mean?
Within 0.2cm3 of each other
What is an element?
A substance made up of one type of atom
What is an atom?
A molecule where the proton and electron numbers are equal and has a neutral overall charge
What is an ion?
A molecule where proton and electron numbers are unequal and they have an overall positive or negative charge
What is a covalent bond?
A bond between metal and non-metal electrons that share electrons. It is the attraction that the 2 positive nuclei have for a shared pair of electrons
How many molecules does a linear shape involve?
2
How many molecules does an angular shape involve?
3
How many molecules does a trigonal pyramidal shape involve?
4
How many molecules does a tetrahedral shape involve?
5
What is a molecule?
A small group of atoms covalently bonded together
What holds electrons together in a covalent bond?
The attraction between the positive nuclei and the negative shared electrons
What are the 7 diatomic molecules?
hydrogen chlorine bromine fluorine idoine oxygen nitrogen
What is an ionic bond?
A bond between non-metal and metal atoms that involves atoms gaining or losing electrons and becoming positively or negatively charged and are therefore the ions are attracted to each other
What is a compound?
Two or more different atoms chemically bonded together
What is a metallic bond?
A bond between metal atoms. It is the attraction between positive ions and a sea of delocalised electrons
State why an atom is neutral
There are equal numbers of positive protons and negative electrons
What is an isotope?
An atom with the same atomic number as another atom but a different mass number
