Chemicals in our brains

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Across
  1. 4. a word that means 'let go' or send
  2. 6. an infectious disease that has spread across many countries
  3. 7. a word for peril or insecurity
  4. 9. your brain releases this chemical to help you to reduce physical pain
  5. 11. this chemical tires to keep us away from danger
Down
  1. 1. your brain releases this chemical when you achieve your goals or when you eat good food with friends
  2. 2. we feel like this when we don't have friends or family
  3. 3. when you have these people in your life you feel good
  4. 5. a chemical that your brain releases when you feel respected and appreciated
  5. 8. our family members from before we were born
  6. 10. you brain releases this chemical t help you to feel close to other people