IB Chem Unit 1 Flashcards

Introduction to Chemistry

How are compounds and mixtures different?

Which state of matter is most easily compressed and why?

Are molecules also considered to be compounds?

Explain the difference between endothermic and exothermic reactions and give an example of each.

Explain the difference between a chemical and physical change and give an example of each.

Is freezing endothermic or exothermic? Is boiling endothermic or exothermic?

Why are sig figs important when reporting measurements?

What two factors determine the accuracy of the measurement?

How would you write 0.000920 km in scientific notation

When working a problem, do conversions count toward determination of the number of sig figs in the  final result?

What is the difference between accuracy and precision?

Can a measurement be precise and not accurate? How does that happen?

What is the goal of scientists when making measurements?

When working problems, what must you show?

Is it important to include units in your problem? Why?