Introduction Introduction

Test ReviewTest Review

1) When working with fire and 1) When working with fire and chemicals you should always:chemicals you should always:

2) What is the first thing you 2) What is the first thing you should do before starting any should do before starting any

experiment? experiment?

3) What is the difference 3) What is the difference between Science and between Science and

Pseudoscience?Pseudoscience?

4) What instrument is used to 4) What instrument is used to measure liquid volume?measure liquid volume?

5) The curve of a liquid in a 5) The curve of a liquid in a measuring device is called ameasuring device is called a

6) What unit is used to measure 6) What unit is used to measure mass in the metric system?mass in the metric system?

7) What units are used to 7) What units are used to measure volume in the metric measure volume in the metric

system?system?

8) What factor does the 8) What factor does the experimenter change to see experimenter change to see

what happens?what happens?

9) You see a flash of lightening, 9) You see a flash of lightening, what would you infer that should what would you infer that should

happen next?happen next?

10) What is the difference 10) What is the difference between a Scientific Theory and between a Scientific Theory and

a Law?a Law?

11) Why should there only be 11) Why should there only be ONE independent variable for ONE independent variable for

an experiment?an experiment?

12) What is the atomic number 12) What is the atomic number always equal to?always equal to?

13) Define an Atom:13) Define an Atom:

14) What is an element?14) What is an element?

15) A compound is when ___ or 15) A compound is when ___ or _____ elements are combined _____ elements are combined

chemically.chemically.

16) A _____ is when 2 or more 16) A _____ is when 2 or more substances can easily be substances can easily be

separated without a chemical; separated without a chemical; change.change.

17) Explain liquid displacement:17) Explain liquid displacement:

18) What element has 7 18) What element has 7 protons?protons?

19) What element has 14 19) What element has 14 protons, 14 neutrons, and 14 protons, 14 neutrons, and 14

electrons?electrons?

20) Which ones are 20) Which ones are compounds:compounds:1. Helium gas1. Helium gas2. Iron bars 2. Iron bars 3. Helium gas and Oxygen 3. Helium gas and Oxygen gas in the airgas in the air4.Carbon dioxide gas4.Carbon dioxide gas

21) Give an example of a 21) Give an example of a mixture and a compound, then mixture and a compound, then

explain why:explain why:

22) Zinc has an atomic number 22) Zinc has an atomic number of 30 and an atomic mass of 65, of 30 and an atomic mass of 65,

how many neutrons does it how many neutrons does it have?have?

23) If a metal bar had a volume 23) If a metal bar had a volume of 34 ml, and a density of 2.0 of 34 ml, and a density of 2.0

g/ml, what would the mass be?g/ml, what would the mass be?

24) If you had a cube with one 24) If you had a cube with one side’s length at 2 cm, and with a side’s length at 2 cm, and with a mass of 16 grams, what would mass of 16 grams, what would

be the density?be the density?

““If you always put limit on If you always put limit on everything you do, physical or everything you do, physical or

anything else. It will spread into anything else. It will spread into your work and into your life. your work and into your life.

There are no limits. There are There are no limits. There are only plateaus, and you must not only plateaus, and you must not stay there, you must go beyond stay there, you must go beyond

them.” Bruce Leethem.” Bruce Lee