Define the term cohesion in 1-2 sentences.

True or False. As scientists we can prove that a hypothesis is 100% true using controlled experiments.

Multiple Choice. A single hydrogen atom has 1 valence electron and can fit up to 2 valence electrons in its valence shell. Based on this information what is the valence of a hydrogen atom? In other words, up to how many covalent bond(s) can a hydrogen atom form?

Multiple Choice. The chemical bond being pointed to by the black arrow in the water molecule shown above is which of the following types of chemical bonds.

True or False. A hydrophobic substance is one that has an affinity for water. In other words, hydrophobic substances are both attracted to and dissolve well within liquid water.

Fill in the Blank. A carbon atom has 4 valence electrons and can fit up to 8 valence electrons within its valence shell. Therefore, a carbon atom has a valence of ________. Hint: Up to how many covalent bonds can a carbon atom form with neighboring atoms?

If inflation is higher than expected, which of the following groups is typically helped?

Alphadonia has an annual real gross domestic product (GDP) of $75.5 billion and a population of 2.5 million. The Beta Republic has a real GDP of $54.6 billion and a population of 1.8 million. Which of the following is true?

What is the term for unemployment that is caused by economic downturns or recessions?

What conditions must a person meet to be officially counted as “unemployed” in the U.S. statistics?