Using the words glass and grass, students practice using the G-blends at the start of a word. Students have to write a sentence using the word and think of three more words that start with the same blend.
Ions are electrically charged particles. Cations have a positive (+ ) charge. Anions have a negative (-) charge. Ions have a charge because electrons can be transferred. The charge is produced when atoms gain electrons (to form anions) or lose electrons (to form cations). Sodium, Na, is in group 1A. It loses one electron to form the sodium ion, Na1+. The charge is written after the symbol as a superscript.
A hydrogen atom is made up of a nucleus with charge +1, and a single electron. Therefore, the only positively charged ion possible has charge +1. It is noted H +. Depending on the isotope in question, the hydrogen cation has different names: Hydron: general name referring to the positive ion of any hydrogen isotope (H +)