CHEM C Exm 1 Study Guide

Identify he study of the composition, structure, properties and reactions of matter

• Biology

• Physics

• Chemistry

• Geology

All the substances that make up our world is called ______________.

• Chemistry

• Matter

• Solids

• Gases

Which of the following is doing chemistry? (you may select more than one answer)

• cooking

• doing laundry

• starting your car

• plants growing

A chemical always has the same ​ (a)   ​ and ​ ​ (b)  

• properties
• composition
• location

Match the following chemicals used in toothpaste with their function

• Abrasive to remove plaque

• Sorbitol

• Prevents hardening of toothpaste

• Titanium dioxide

• Wintergreen flavor

• Sodium lauryl sulphate

• Makes toothpaste white

• Methyl salicylate

• loosens plaque

• calcium carbonate

Match the following branches of chemistry to what they study:

• Carbon

• General Chemistry

• Composition, properties and reactions o

• Geochemistry

• reactions in living systems

• Physical Chemistry

• energy changes

• Biological Chemistry

• chemical composition of ores and soils

• Organic Chemistry

The scientific method includes which of the following? (You may use more than one answer)

• Observations

• Hypothesis

• Reason

• Experiments

• Conclusion

Paracelsus was an early chemist that thought which of the following: (you may use more than one answer)

• Lead could be turned into gold

• minerals could be used as medicine

• dust caused lung disease

• dose could be poison or cure

Identify: Drinking coffee keeps me awake at night

• Observation

• Experiment

• Hypothesis

• Conclusion

Identify: I will drink coffee only in the morning

• Observation

• Experiment

• Hypothesis

• Conclusion