Endothermic And Exothermic Reactions Flashcards
1
Q
What is acid?
A
It is a corrosive substance which has a pH lower than 7
2
Q
What is activation energy
A
The minimum amount of energy that colliding particles must have for them to react
3
Q
What is an alkali
A
A substance producing more hydroxide ions than hydrogens ions when dissolved in water
4
Q
What is a bond?
A
The chemical link that holds molecules together
5
Q
What is bond energy
A
The amount of energy needed to break one mole of covalent bond
6
Q
What is combustion
A
The process of burning by heat
7
Q
What is a covalent bond
A
A bond between atoms formed when atoms share electrons to make a fill outer shell of electrons
8
Q
What is a displacement reaction
A
A reaction that curs when a more reactive element replaces a less reactive element in a compound
