Benzene is a colorless liquid with a sweet odor. It evaporates into the air very quickly and dissolves slightly in water.
In psychology the term, early childhood is usually defined as the time period from the age of two until the age of six or seven years. There are three simultaneous development stages:
These are usually separate schools on the same site. The infant age range (Key Stage 1) is from age 5 to 7. The Junior age range (Key Stage 2) is from age 7 to 11. The year groups at primary School level are: Year R (Reception) (age 4 â 5) Year 1 (age 5 - 6) Year 2 (age 6 - 7) The year when SATs testing takes place for Key Stage 1.