Miniature Midterm Science Exam#1

Name: ______

Total Mini Exam Score: ______/ 134

8th Grade

Science Mini-Midterm Exam

2015

This practice exam contains some sample problems that are found on the midterm exam.

There are some problems in this practice exam that you may not recognize. This is normal due to the fact that this is December and we haven’t covered January’s lessons yet. I have marked the sections that we have not covered yet with this symbol:J .Feel free to read ahead in your textbook and get a head start on these lessons.

The practice exam, like the actual exam, has a content section and an application section. Be sure to review both.

Part I – Content (vocabulary) 68 points

Part II – + Application 66 points

134 points

Miniature Midterm Science Exam#1

Content Portion Score:____/68

Chapter I

1. ______is the most logical explanation for events in nature.

2. Identify the three main branches of science: ______, ______, ______.

3. List the seven steps of the scientific method:

· ______

4. The factor being tested in an experiment is a(n) ______.

5. Write in basic unit for each measurement.

Measurement / Unit
Length
Temperature
Mass
Volume
Density

6. ______is the process used to convert from one unit to another unit.

7. Identify the tool used to measure:

Measurement / Tool
Length
Temperature
Mass
Volume

8. Match the goal to the formula that will help to achieve that goal. Note:”*” means times.

______change oC to oF A. oC + 273

______change oF to oC B. 9/5* oC + 32

______change oC to oK C. (oF – 32) * 5/9

Chapter II

1. What are the general properties of matter (note: General Properties are qualities that all matter have)? ______, ______, ______, ______.

2. Density is Mass per unit ______.

3. The pull of gravity on an objects mass is know as its ______.

4. ______is the amount of space that an object takes up.

5. ______is the amount of matter in an object.

6. Earths gravity number is ______m/s2.

7. ______is a method used to determine the volume of an irregular object.

8. ______is the force of attraction that all objects have.

Chapter III

1. What are some physical properties of matter (Note: Physical Properties are qualities that distinguish one type of matter from another)? ______, ______, ______, ______

2. If you change the physical properties of matter a ______may occur.

3. The four phases of matter are ______, ______, ______, ______.

4. ______do not have definite shapes.

5. A gas has ______shape and ______volume.

6. ______law show a direct relationship between temperature and volume.

7. The change of a liquid to a gas at the surface of a liquid is called______.

8. When a substance becomes a new material a ______change has happened.

9. ______is when a solid changes directly into a gas.

10. ______is the temperature that a gas becomes a liquid.

Chapter IV Matching

1. ______Mixture- A. A solid solution

2. ______Compound- B. The smallest functional unit of a compound

3. ______Heterogeneous mixture- C. Two or more physically combined substances

4. ______Alloy- D. The material that gets dissolved in a solution

5. ______Molecule- E. Two or more chemically combined substances

6. ______Solute- F. Two or more visually different substances

physically combined

Chapter V

1. The Atomic number represents ______.

2. ______was the first to come up with the idea of an atom.

3. ______and ______are in the nucleus.

4. Define isotope- ______

5. What is the charge of each:

· Proton- ______

· Neutron- ______

· Electron- ______

6. Electrons are found in ______.

7. What force within the atom keeps electrons and protons their area? ______

Miniature Midterm Science Exam#1

Application Portion Score:____/66

Chapter 1 Skills: DIMENSIONAL ANALYSIS & TEMPERATURE SCALE CONVERSION

I. Use dimensional analysis to convert from one unit to another.

Mixed Problems / 6cups = ___ pints / 24oz = ___lbs. / 3,500m = ____km
Step 1
Step 2
Step 3
Step 4

II. Convert from one unit to another unit.

1. 52 oC à ___oF 2. 212oF à ____oC 3. 90oC = _____oK

Difficult Problem:

4. 230oF = ____oK

Chapter 2 Skills: Calculating Mass, Weight, Volume and Temperature

Word Problems: For each object below find the volume of each object. Remember to use the proper volume formula from pg 9 of your homework copy book. Then notice the mass of each object. Finally use the volume and mass numbers to calculate the density.

V = ______L = 3

D = ______H = 10

Mass = 100g W = 2

V = ______

D = ______

Mass = 90 g

Chapter 3 Skills: The three gas laws & Phases of Matter

Boyle’s Law: Determine how the pressure change causes a change in volume. Note: pressure is often measured in units called “psi” which stands for Pounds per Square Inch.

Pressure / New Pressure / Volume / New Volume
10 psi / 70 psi / 21 cm 3 / _____ cm 3
30 psi / 6 psi / 50 cc / _____ cc
20 psi / 60 psi / 12 ml / _____ml

Charles’ Law: Determine how the Temperature change causes a change in volume.

Temperature / New Temperature / Volume / New Volume
80 0 Celsius / 10 0 Celsius / 16 cc / ______cc
20 0 Celsius / 40 0 Celsius / 35 mL / ______mL
46 0 Celsius / 69 0 Celsius / 14 cm 3 / ______cm 3

Ideal Gas Law: First determine how the pressure causes the volume to change. Then, determine how the temperature will cause the newly changed volume to change again.

Label the phases of matter and processes:

Word Bank: Liquid, Solid, Gas, Melting, Freezing, Condensation, Sublimation, Evaporation

Chapter 4 Skills: Identifying element names and symbols, writing chemical formulas from structural formulas.

I. Fill in the missing information. II. Write the chemical formula for these molecules.

Element Name / Symbol
1. Phosphorus
2. Silver
3. / K
4. / Na
5. Helium
6. Tin
7. / Au
8. / Al
9. Magnesium
10. Iron

Chapter 5 Skills: Calculating Protons, Neutrons, Electrons. Drawing neutral atoms and their isotopes.

I. Complete the table below:

Element / Atomic # / Mass # / Protons / Neutrons / Electrons
Helium / 2 / 2
Lithium / 7 / 4 / 3
Boron / 5 / 11
Potassium / 39 / 20
Zink / 65 / 35

II. Identify the normal element below: Identify the isotope below: