Y 9 Chemistry
Homework 8 April
• Select short report on a chemical problem issue
• Select 3 words and make a glossary of terms• Write 3 Comprehension questions• Gmail : [email protected]
Example
Review of rules
• Ionic make ions of Nobel gases – ionic crystal• Covalent share by overlap – shaped molecule,
macro molecule
Mass conservation – R&V
• Mass conserved because atoms don’t disappear or are appear
• Validity – fair and correct procedure that measures what you think
• Reliability – quality of answer, how repeatable• Need to know dependant and independent.