Ohio Science Academic Content Standards (2002)
Physical Sciences
Benchmarks (9–10)
A.
Describe that matter is made of minute particles called atoms and atoms are comprised of even smaller components. Explain the structure and properties of atoms.
B.
Explain how atoms react with each other to form other substances and how molecules react with each other or other atoms to form even different substances.
Grade Level Indicators (Grade 9)
5.
Describe how ions are formed when an atom or a group of atoms acquire an unbalanced charge by gaining or losing one or more electrons.
7.
Show how atoms may be bonded together by losing, gaining or sharing electrons and that in a chemical reaction, the number, type of atoms and total mass must be the same before and after the reaction (e.g., writing correct chemical formulas and writing balanced chemical equations).
Scientific Inquiry
Benchmarks (9–10)
A.
Participate in and apply the processes of scientific investigation to create models and to design, conduct, evaluate and communicate the results of these investigations.
Grade Level Indicators (Grade 9)
6.
Draw logical conclusions based on scientific knowledge and evidence from investigations.
Grade Level Indicators (Grade 10)
4.
Draw conclusions from inquiries based on scientific knowledge and principles, the use of logic and evidence (data) from investigations.
Scientific Ways of Knowing
Benchmarks (9–10)
A.
Explain that scientific knowledge must be based on evidence, be predictive, logical, subject to modification and limited to the natural world.
National Science Education Standards
Physical Science
Structure and properties of matter (Grades 9 - 12)