NAME: ________________________
PERIOD: _______
QUIZ 1 - CHEMISTRY
1. (17) Convert the following:

45.8 centimeters  ____________ meters

1.32 grams  __________ milligrams

0.086 liters  __________ milliliters

15.9 ml  __________ cm3

30 C0  __________ K
2. (3) Using the targets below, draw a data scatter (or archery target) that demonstrates the
following three conditions: (a) Good accuracy & precision; (b) Poor accuracy & poor
precision; and, (c) Poor accuracy and good precision.
3. (3) Complete the following about accuracy & precision:
 _____________ means collecting data that are “correct”; all very close together.

Measurements that are __________________ have less uncertainty.
4. (1) Define the following terms:
 Control variable:
 Manipulated variable:
 Responding variable:
 Experimental control variable:
5. (1) Jennifer wanted to know how much carbon dioxide was produced from mixing
different amounts of baking soda and vinegar in her volcano models. She placed 50 ml of
vinegar in each volcano. In the first model she added 20g of baking soda, in the second she
added 40g of baking soda, and in the third she added 60g of baking soda. She placed three
yellow balloons of the same size over the vents of the volcanoes and waited one minute.
After 1 minute she tied the balloons and measured their diameter. She repeated her
investigation three times.
•
What are 2 controlled variables: ___________________________________________________
•
What is the manipulated variable: _________________________________________________
•
What is the responding variable: ___________________________________________________
6. (9) Using your skills of observation, find the 6 differences between the two pictures.
Circle the differences in picture b.
7. (10) Using the Far Side cartoon, determine if each statement is an inference or an
observation:
a. _____ The woman is
wearing a flowered dress.
b. _____ The boy on the
rack is the youngest
brother.
c. _____ There are 3 people
wearing glasses.
d. _____ The driver has his
hands on the steering
wheel.
e. _____ The two boys in
the back are brothers.
8. Name each of the following measuring devices. Make sure you indicate what the device
measures and the units they each record.
 Name of device: _______________
 What it measures: ___________________
 Units used: _________________
 Name of device: _______________
 What it measures: ___________________
 Units used: _________________
 Name of device: _______________
 What it measures: ___________________
 Units used: _________________
9. In the following situations name the tool that would be used AND the metric unit of
measurement most likely used:
 Amount of water to feed plants: ________________________________
 Temperature of a beaker of solution: ____________________________
 Mass of a toy car: _________________________________
EXTRA CREDIT:
How many times in a day will the minute hand and the hour hand of a clock point in
exactly the same direction? Explain your reasoning.