Question

determine which type of property each statement describes by typing \physical\ or \chemical\ in the blank. hydrogen is a colorless, tasteless, and odorless gas. hydrogen is very combustible in the presence of oxygen. hydrogen is very reactive with most elements. hydrogen is the least dense of all elements.

Explanation:

• A physical property is a characteristic of a substance that can be observed or measured without changing the substance's identity. Color, taste, odor, and density are physical properties.
• A chemical property is a characteristic of a substance that describes its ability to undergo a chemical change or reaction. Combustibility and reactivity are chemical properties.

Answer:

1. physical
2. chemical
3. chemical
4. physical