All matter is made of atoms that are composed of protons, neutrons and electrons; natural radioactivity arises from the decay of nuclei in atoms
Standard detail
ACSSU177
Depth 0Standard set: Chemical Sciences
Original statement
Quick facts
- Statement code
- ACSSU177
- Standard ID
- 7AABF62DBEC642E2B58CC56335F88315
- Subject
- Science
- Grades
- 07, 08, 09, 10
- Source document
- K-10 Science Curriculum
- License
- CC BY 4.0 US