1. First Test Review!

2. Before starting an experiment, you should
try an experiment on your own
open all containers and packages
read all directions and make sure you understand them
handle all the equipment to become familiar with it 30

3. Matter is made up of particles too small to be seen by the human eye
Matter is made up of particles too small to be seen by the human eye. What are these particles?
Atoms
Compounds
Mixtures
oxygen 30

4. What variable should come after the “then” in an hypothesis?
Constant
Dependent
Independent
Measurable 30

5. If you get hurt or injured in any way, you should
tell your teacher immediately
find bandages or first aid kit
go to the principals office
get help after you finish the lab 30

6. When I enter the science lab, I will
begin my experiment
play with equipment
wait for the teacher to give instructions
read the instructions myself and get started 30

7. The electron cloud is Much smaller than the atom’s nucleus
Much larger than the atom’s nucleus
About the same size as the atom’s nucleus
Always changing size 30

8. Identify the lab equipment.
scale
Graduated cylinder
ruler
triple beam balance 30

9. What should you do when you have completed your laboratory activity?
sit and talk to your lab partner
leave your area messy
wash your hands thoroughly
clean up your area 30

10. What unit of measurement would you use with this tool?
meter
liter
gram
yard 30

11. Participant Scores
Points
Participant

12. Fastest Responders (in seconds)
Participant

13. What SI unit do we use for mass?
pounds
inches
Kelvin
grams 30

14. Elements in the periodic table are arranged by
How they react with metals
Half-life and atomic mass
Properties and atomic number
The number of neutrons and ions 30

15. How long is the crayon?
71 cm
7.1 cm
7.0 m
7.0 cm 30

16. How much mass does the object have?
35 g
330.5 g
335 g
3305 g 30

17. How much liquid is in the graduated cylinder?
76 mL
70.3 mL
73 mL
74 mL 30

18. What are neutrons? Uncharged particles in an atom’s nucleus
Negatively charged particles in an atom’s nucleus
Uncharged particles that form a cloud around an atom’s nucleus
Charged particles that form a cloud around an atom’s nucleus 30

19. Identify the lab equipment.
beaker
Graduated cylinder
Erlenmeyer flask
funnel 30

20. Which of these tools would be used to find the length of the football field?
graduated cylinder
meter stick
triple beam balance
thermometer 30

21. In an experiment, the variable that is being tested is the?
dependent variable
responding variable
independent variable
constant variable 30

22. The nucleus of the atom contains
Protons, neutrons and electrons
Only electrons
Protons and neutrons
Electrons and protons 30

23. Participant Scores
Points
Participant

24. Fastest Responders (in seconds)
Participant

25. In solving a problem by a scientific investigation, which of the following would be the best first step?
1. Design an experimental procedure.
2. Define the problem by asking questions.
3. Come to a conclusion based on your existing knowledge.
4. Form a larger group and vote on the answer. 30

26. For his science fair project, Nigel wants to examine how different surfaces affect the speed of his skateboard. Is this a testable question?
Yes No 30

27. An atom consists of Metals, nonmetals, and metalloids
Electrons, protons, and neutrons
Elements, compounds, and molecules
Products, reactants, and catalysts 30

28. speed different surfaces the skateboard time
For his science fair project, Nigel wants to examine how different surfaces affect the speed of his skateboard. His hypothesis is that if the type of surface the skateboard is moving on is smoother, then the skateboard will increase speed because there would be less friction. What is the independent variable in Nigel’s experiment?
speed
different surfaces
the skateboard
time 30

29. speed different surfaces the skateboard time
For his science fair project, Nigel wants to examine how different surfaces affect the speed of his skateboard. His hypothesis is that if the type of surface the skateboard is moving on is smoother, then the skateboard will increase speed because there would be less friction. What is the dependent variable in Nigel’s experiment?
speed
different surfaces
the skateboard
time 30

30. A substance made of only one type of atom is a(n)
Element
Compound
Mixture
Molecule 30

31. An ion is an atom with More than one proton More than one nucleus
No electrical charge
An overall electrical charge 30

32. What variable should come after the “If” in an hypothesis?
Constant
Dependent
Independent
Measurable 30

33. The atomic number of an element tells you the atom’s
Mass
Number of neutrons
Weight
Number of protons 30

34. What phrase describes an hypothesis?
a theory explaining the topic
an opinion about an investigation
a fact based on available evidence
an educated guess that is testable 30

35. The positively charged particles in an atom are
Electrons
Neutrons
Nuclei
Protons 30

36. Worms are eating Rose's pea plants
Worms are eating Rose's pea plants. She wants to test some household chemicals to see if they will kill the worms. What is the best testable question for Rose to ask?
1. Are earthworms or inchworms hardest to kill?
2. What amount of soapsuds best kills worms?
3. Will worms eat soapsuds?
4. How are soapsuds best spread over a garden? 30

37. Which skill are you using when you use your five senses to gather information?
posing questions
observing
developing hypotheses
designing experiments 30

38. Which question would be answered with an opinion rather than scientifically?
1. What is the speed of a running cougar?
2. How fast does a mouse grow?
3. What is the heart rate of a shark?
4. Which cat has the most attractive coat? 30

39. Participant Scores
Points
Participant

40. Fastest Responders (in seconds)
Participant

41. 3. amount of stain left on the cloth 4. scrubbing time for each cloth
John wanted to find out which laundry soap was best for removing grass stains. Each soap was mixed with warm water. It was then used to scrub a piece of grass-stained cloth for 1 minute. Then the amount of stain left on the cloth was measured. What is the independent variable?
1. water temperature
2. laundry soap
3. amount of stain left on the cloth
4. scrubbing time for each cloth 30

42. amount of stain left on the cloth scrubbing time for each cloth
John wanted to find out which laundry soap was best for removing grass stains. Each soap was mixed with warm water. It was then used to scrub a piece of grass-stained cloth for 1 minute. Then the amount of stain left on the cloth was measured. What is the dependent variable?
water temperature
laundry soap
amount of stain left on the cloth
scrubbing time for each cloth 30

43. What are electrons? Positively charged particles
Negatively charged particles
Particles with no charge
Particles whose charge can change 30

44. The three basic units are: meter, liter, pounds.
True
False 30

45. The total number of protons and neutrons in the nucleus determines the atom’s
Symbol
Atomic number
Atomic mass number
size 30

46. In an experiment, the variable that is being tested is the?
dependent variable
responding variable
independent variable
constant variable 30

47. Participant Scores
Points
Participant

48. Fastest Responders (in seconds)
Participant