All Flashcards
What is the effect of increasing temperature on a gas?
The particles move faster and the gas expands if the container allows, or the pressure increases if the volume is fixed.
What is the effect of strong bonds between particles in a solid?
The solid maintains a fixed shape and volume.
What are the differences between solids, liquids, and gases?
Solids: Fixed shape and volume, strong bonds. Liquids: Fixed volume, no fixed shape, weaker bonds. Gases: No fixed shape or volume, very weak bonds.
What are the differences between elements and compounds?
Elements: Made up of only one type of atom. Compounds: Made up of two or more different elements chemically bonded.
What is the difference between molecular and empirical formula?
Molecular Formula: Shows the actual number of atoms of each element in a molecule. Empirical Formula: Shows the simplest whole number ratio of atoms of each element in a compound.
What are the steps to determine the empirical formula from percent composition?
- Percent to grams. 2. Grams to moles. 3. Divide by the smallest mole value. 4. Multiply to get a whole number ratio.