Chemistry Unit 1 Test

How exact a measurement is made. (a)  

• Precision
• Matter
• Energy
• Chemistry
• Accuracy

The study of the composition and properties of substance and the changes and reactions they undergo is called (a)   .

• Chemistry
• Matter
• Energy
• Accuracy
• Precision

Match the following scientific terms with their correct definitions.

• The extent to which repeated measurements under unchanged conditions show the same results.

• Precision

• The extent your answer agrees with the accepted value.

• Matter

• Anything that has mass and occupies space.

• Energy

• The ability to do work or cause change.

• Chemistry

• The study of substances, their properties, and reactions.

• Accuracy

Match the following scientific terms with their correct definitions.

• The numbers taken from a measuring device plus one additional estimated value.

• Chemistry

• The closeness of a measured value to the true value.

• Energy

• Anything that has mass and occupies space.

• Significant Digits

• The study of substances, their properties, and reactions.

• Matter

• The ability to do work or cause change.

• Accuracy

Match each branch of chemistry with its main focus or area of study.

• Study of chemical processes in living organisms

• Organic Chemistry

• Analysis of substances to determine their composition

• Biochemistry

• Study of physical properties and behavior of molecules

• Inorganic Chemistry

• Study of carbon-containing compounds

• Analytical Chemistry

• Study of inorganic compounds

• Physical Chemistry

What is the SI unit for temperature?

2.3 km = _?_ mm

450 mm = _?_ m

0.000 24 Gg = _?_ kg

1.3E6 cg = _?_ ng (answer must be in scientific notation)