Inventions

1. Play-doh is not _ _ _ _ _ and is safe to play with.
2. What does H in HB stand for?
3. The problem of serving ice cream in glass cups is that people would either forget to give them back or _ _ _ _ _ them by mistake.
5. Microwave was earlier known as _ _ _ _ _ _ _ _ ovens.
7. Play-doh was first invented as a _ _ _ _ _ _ _ _ supply.
8. What was ice cream served in before ice cream cones were discovered?
10. Who were the first ones to discover chocolate? _ _ _ _ _
13. White phosphorous is dangerous while _ _ _ phosphorous is safe for use.
15. In 1924, cone production in Europe rose to record-breaking number of 245 _ _ _ _ _ _ _ cones.
17. When people found that it was messy to use a graphite stick, they originally used _ _ _ _ _ to cover the graphite.
18. Eating _ _ _ _ chocolate may help to reduce risk of heart diseases.
20. Pencil leads are made of _ _ _ _ _ _ _ _.

1. Percy Spencer was one of the _ _ _ _ _ people to be hired to work at the paper mill.
4. The first microwave was too big and could only be used by _ _ _ _ _ _ _ _ _ _ _ _.
6. The _ _ _ _ _ _ _ of Toy’s list contains the top 100 most memorable and creative toys in the past 100 years.
9. What food was George Crum’s restaurant known for?
11. Chocolate chip cookies were an _ _ _ _ _ _ _ _ _ _ invention.
12. Which country invented fries? _ _ _ _ _ _ _
14. Phillumeny is the _ _ _ _ _ of collecting matchsticks.
16. What is the gas found in a bag of potato chip? _ _ _ _ _ _ _ _
19. For a matchstick to catch fire, we need to strike it against a _ _ _ _ _ paper.