Review For Test #1

19 Questions | By Jmori | Last updated: Mar 21, 2022 | Total Attempts: 154

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Review and practice for your Chemistry Test #1. If you miss something, include the information in your notes to help you remember.

Questions and Answers

1.

Why did scientist agree to use the SI measurement units worldwide instead of the units common at each of their own locations?
2.

Whichof the following words isclosest in meaning to the word concept?
- A.
  
  Plan
- B.
  
  Question
- C.
  
  Idea
- D.
  
  Solution
3.

In the sentence, "Scientists include both constant and changing parameters in their experiments," what doe the word parameter mean?
- A.
  
  Rules, limits or boundaries
- B.
  
  Value used to dfine something
- C.
  
  Environment of surroundings
- D.
  
  Procedure in an experiment
4.

What is the first step you should take if someone is cut with broken glass during an experiment?
- A.
  
  Apply first aid
- B.
  
  Clean up the class
- C.
  
  Complete the experiment
- D.
  
  Make sure you are safe
5.

What tool might a scientist use for an experiment about the mass of objects?
- A.
  
  Graduated cylinder
- B.
  
  Celcius thermometer
- C.
  
  Electronic scale
- D.
  
  Meterstick
6.

Which of the following should be avoided in the area where an experiment is taking place?
- A.
  
  Tying long hair back in a ponytail
- B.
  
  Keeping information from previous experiments on the work area
- C.
  
  Wearing safety goggles that fit snugly over your eyes
- D.
  
  Wearing heat-resistant gloves if an open flame is used
7.

What is the density of an object with a mass of 100.8 g and a volume of 144 cm3?
- A.
  
  700 g/cm3
- B.
  
  70 g/cm3
- C.
  
  7 g/cm3
- D.
  
  0.7 g/cm3
8.

What is the density of an object with a mass of 89.5 g and a volume of 75.1 mL?
- A.
  
  1.0 g/mL
- B.
  
  1.19 g/mL
- C.
  
  2.19 g/mL
- D.
  
  6721.45 g/mL
9.

When a prefix is put in front of a base unit in the metric system, what does the prefix do to the base unit?
10.

What does the prefix "c" mean in the metric system?
11.

How many mm long is a line that measures 18 cm?
12.

Convert: 23.98 hm into _____________ mm
13.

Convert: 72.9 g into _____________kg
14.

What unit do we use to measure the speed of a bicycle?
15.

Measurements that have good accuracy and good precision are called ________________ by scientists.
16.

A __________ is a way to represent an object or a system to help us understand somehing that is not familiar to us.
17.

In science, a ____________ is an explanation that combines many hypotheses and observations. (e.g. gravity)
18.

Only when a model correctly predicts the results of many different experiements can a ______ be constructed to summarize results and obervations of many experiements. It tells how things work.
19.

In science, measuring the L x W x H helps you find the _____________ of an object.