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Atomic Structure and Counting Atoms Exit ticket
Student ID number
Current Science Teacher
Formulas I and III
Formulas I and IV
Formulas II and III
Formulas I, II, and V
2. Serotonin is a chemical substance that acts as a neurotransmitter. It helps relay messages in the human brain. The formula for one molecule of serotonin is shown below. How many atoms are in this molecule of serotonin?
3. What is the mass number of Phosphorus (P) atom that has 16 neutrons?
4. A model of a beryllium atom is shown below. What types of particles are found in the cloud surrounding the atom's nucleus?
Positively charged particles and negatively charged particles
Negatively charged particles only
Neutral particles and positively charged particles
Positively charged particles only
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