Question

1. it is made with only one type of atom. a. element b. compound c. homogenous mixture d. heterogeneous mixture part b: states of matter (multiple choice - 1 pt each) 6. which state of matter has a definite volume but no definite shape? a. solid b. liquid c. gas d. plasma 7. the particles in a solid: a. move freely in all directions b. are far apart and move rapidly c. vibrate in fixed positions d. flow past each other 8. which of the following changes represents a physical change, not a chemical change? a. production of gas b. water boiling c. iron rusting d. molds in the cheese 9. what state of matter is described as having ionized particles with high energy and no definite shape or volume? a. liquid b. solid c. plasma d. bose - einstein condensate

Explanation:

• For question 5, an element is made of only one - type of atom. Compounds have different types of atoms, and mixtures are combinations of different substances.
• For question 6, liquids have a definite volume but take the shape of their container, so they have no definite shape of their own. Solids have a definite shape and volume, gases and plasmas have no definite shape or volume.
• For question 7, particles in a solid vibrate in fixed positions due to strong intermolecular forces.
• For question 8, water boiling is a physical change as it is a change of state from liquid to gas without changing the chemical composition. Production of gas in a chemical reaction, iron rusting (oxidation), and molds in cheese (biological - chemical process) are chemical changes.
• For question 9, plasma is a state of matter with ionized particles, high energy, and no definite shape or volume. Liquids have a definite volume, solids have a definite shape and volume, and Bose - Einstein condensates are a different state with unique properties.

Answer:

1. A. Element
2. B. Liquid
3. C. Vibrate in fixed positions
4. B. Water boiling
5. C. Plasma