Chemistry Quiz 11 (25 MCQs)

Quiz Instructions:

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1. Bronze has been in use since 3500 B.C Currently bronze contains about 75 percent copper and 25 percent.

2. How many meters are in 680 nm

3. Name the reaction of ethene reacted with oxygen?

4. Which element is a poor conductor of electricity, unmalleable and a non-metal?

5. What is the name of the reaction when alkenes react with HCl?

6. Whenobserving a salad with lettuce, carrots, radishes, and cucumbers, a studentcorrectly classified it as which of the following?

7. Elements in the same group have _____

8. An agriculture class intends to find out why their garden isn't cooperating right. What type of research is used?

9. Which chemical equation represents a neutralisation reaction?

10. The substance in a mixture are evenly distributed throughout the mixture

11. Which element in period four is a metalloid?

12. The nucleus of an atom usually contains:

13. Which term does not fit with the others listed?

14. Substance produced in a reaction.

15. Molecules are close together but are not held so rigidly in position and can move past one another.

16. Number of moles of CO2 present in 22.0g of carbondioxide is

17. Classify the following as a physical change or a chemical change:slicing a loaf of bread

18. What is the name given to research that is undertaken to solve a specific problem?

19. How many Hydrogen are in 4H2O?

20. The study of Earth's atmospheric ozone and the effect of chlorofluorocarbons on ozone is an example of _____

21. This scientist classified elements according to certain groups such as gases, non-metals, metals and metal oxides.

22. Which of the following shows the correct way to balance the chemical equation? Fe + O2 $\rightarrow$ Fe2O3

23. Heating a teaspoon of sugar over a candle flame produces a chemical change. In addition to changing colour, what else does the reaction produce?

24. The periodic table is in order by the

25. Use the periodic table to determine the Chemical symbol for Iron.