Reactions Flashcards
1
Q
What are chemical reactions?
A
In a chemical reaction, chemical bonds between atoms are broken and made, so the atoms get rearranged into new substances.
2
Q
What is a word equation?
A
A word equation shows the names of each substance involved in a reaction, and must not include any chemical symbols or formulae. For example:copper + oxygen → copper oxide In this reaction, copper and oxygen are the reactants, and copper oxide is the product.
3
Q
What is a physical reaction?
A
Physical changes, such as melting, boiling and dissolving, do not make new chemicals. They are usually easy to reverse.
