Module 1 Unit 2 Assignment B

# Module 1 Unit 2 Assignment B - MODULE 1 UNIT 2 Assignment...

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MODULE 1 UNIT 2 Assignment Part B 1. Why do we use measures of mass rather than of weight in this course? WEIGHT IS A MEASURE OF GRAVITATIONAL FORCE ACTING ON AN OBJECT AND CAN VARY BASED UPON THE INTENSITY OF THE GRAVITATIONAL FORCE ACTING UPON THIS OBJECT. MASS IS A MEASUREMENT OF THE AMOUNT OF MATTER IN AN OBJECT AND WILL CONSEQUENTLY REMAIN CONSTANT NO MATTER THE OBJECTS LOCATION. 3 marks 2. In each of the following situations, describe and explain what happens to the mass and weight of a sample of water: ( 3 marks each) a) A glass of water is left on a table over many day. THE WEIGHT OF THE WATER WILL LESSEN AS SOME OF THE WATER WILL HAVE EVAPORATED INTO THE ATMOSPHERE. THE MASS OF THE WATER WILL ALSO LESSEN AS IT EVAPORATES INTO THE ATMOSPHERE. NO MATTER IS DESTROYED IN THIS REACTION, BUT SINCE THERE IS NO WAY TO MEASURE THIS WATER THAT HAS EVAPORATED (IT IS NOT HERMETICALLY SEALED) IT IS ESSENTIALLY LOST. b) Water, in a hermetically sealed container, is transported from the Earth’s surface to the moon’s surface. THE WEIGHT OF THE WATER WILL LESSEN AS THE GRAVITATIONAL FIELD ACTING UPON THE WATER IS LESSENED. HOWEVER THE MASS WILL REMAIN THE SAME AS THE CONTAINER IS HERMETICALLY SEALED AND EVEN THOUGH SOME OF THE WATER WILL EVAPORATE, ITS MASS IS NOT LOST. 6 marks 3. For each of the formulas given below, state the name of the represented elements and the number of atoms of each element. (2 marks each)

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