Question 27
The Standard Model of Physics recognizes ____ elementary particles that make up all matter which are merely combinations of these subatomic elementary particles.
A. 15
B. 20
C. 25
D. 30
E. 35
Editorial review: explain the scientific issue and state any assumptions needed for a supported answer.
A. 15
B. 20
C. 25
D. 30
E. 35
Editorial review: explain the scientific issue and state any assumptions needed for a supported answer.