How much space an object takes up.

Understand how to correctly read a graduated cylinder from the bottom of the meniscus, and provide an accurate measurement with the correct unit and decimal place reading, which depends upon the scale reading on the graduated cylinder being used.

For regularly shaped objects, like a rectangular prism, you must be able to calculate volume using the formula: Volume= Length x width x height

Accuracy and Precision

Understand how to correctly read a ruler, and provide a precise measurement with the correct unit and decimal place reading.

The amount of “stuff” in an object. The mass of an object is determined using a balance. Mass is NOT the same as weight.

The Sensitivity of the Balance

The sensitivity of our electronic balances used in 8th grade science is 0.01g. Be able to explain what it means to be sensitive to 0.01g.

The digits in a number that are significant. This is most important in measured values. You always want to maintain the value of a number when you are rounding calculations.

Physical vs. Chemical Reactions

Physical changes alter a substance's appearance but not its chemical composition, while chemical reactions create new substances with different compositions by breaking and forming chemical bonds

Differentiate between direct evidence (something you see or measure during an experiment) and a reason (a scientific conclusion or explanation based on your evidence).

What happened in the test tube? And what happened in the inverted bottle? Describe or draw what happened.

Volume of Granular Substances

objects that are like sand, but might be different sized grains): Be able to calculate the air or substance volumes using new values. Determine the percentages of air or substance of the original.

Recognize that when comparing the volumes of objects using the water displacement method, the type of liquid used does not affect the measurement of the object's volume.

Identify the disadvantages of using a shape that isn’t rectangular. And what needs to be true for the water displacement method to work in helping to overcome the disadvantages.

Be able to calculate the mass of a single until given the total mass of a collection of identical units. The formula that will help with determining the mass of one square is: Mass per square = Mass of all squares / Total # of all squares

Know when to count zeros, they SOMETIMES count as a digit. Numbers 1 through 9 ALWAYS count as digits.

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Science Test Review

Chapter 1 test review

Question	Answer
Defining Volume	How much space an object takes up.
Volume of Liquids	Understand how to correctly read a graduated cylinder from the bottom of the meniscus, and provide an accurate measurement with the correct unit and decimal place reading, which depends upon the scale reading on the graduated cylinder being used.
Volume of Solids	For regularly shaped objects, like a rectangular prism, you must be able to calculate volume using the formula: Volume= Length x width x height
Accuracy and Precision	Understand how to correctly read a ruler, and provide a precise measurement with the correct unit and decimal place reading.
Defining Mass	The amount of “stuff” in an object. The mass of an object is determined using a balance. Mass is NOT the same as weight.
The Sensitivity of the Balance	The sensitivity of our electronic balances used in 8th grade science is 0.01g. Be able to explain what it means to be sensitive to 0.01g.
Significant Digits	The digits in a number that are significant. This is most important in measured values. You always want to maintain the value of a number when you are rounding calculations.
Physical vs. Chemical Reactions	Physical changes alter a substance's appearance but not its chemical composition, while chemical reactions create new substances with different compositions by breaking and forming chemical bonds
Evidence vs. Reason	Differentiate between direct evidence (something you see or measure during an experiment) and a reason (a scientific conclusion or explanation based on your evidence).
Recall & Review	What happened in the test tube? And what happened in the inverted bottle? Describe or draw what happened.
Volume of Granular Substances	objects that are like sand, but might be different sized grains): Be able to calculate the air or substance volumes using new values. Determine the percentages of air or substance of the original.
Variables	Recognize that when comparing the volumes of objects using the water displacement method, the type of liquid used does not affect the measurement of the object's volume.
Disadvantages	Identify the disadvantages of using a shape that isn’t rectangular. And what needs to be true for the water displacement method to work in helping to overcome the disadvantages.
Calculations	Be able to calculate the mass of a single until given the total mass of a collection of identical units. The formula that will help with determining the mass of one square is: Mass per square = Mass of all squares / Total # of all squares
Counting Rules	Know when to count zeros, they SOMETIMES count as a digit. Numbers 1 through 9 ALWAYS count as digits.

Created by: charliecivale

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