Hi! I am having some trouble with this question, can you please help me?
Which of the following describe chemical properties? Check all that apply.
- Iodine (a purple solid) becomes a purple gas.
- Titanium is less dense that iron .
- Water freezes at 0'C
- Sugar burns in air to form water and carbon dioxide.
I am thinking that the answer is only the last option, sugar burns in air to form water and carbon dioxide. But I am not sure.
Thanks for your help.
The last one is the only one that involves a chemical reaction.
Hi! I can definitely help you with that question. To determine which of the given options describe chemical properties, we need to understand what chemical properties are.
Chemical properties relate to how a substance interacts with other substances to undergo a chemical change. These properties describe the behavior of a substance when it undergoes a reaction or when it interacts with other substances.
Now, let's analyze the options one by one to identify the ones that describe chemical properties:
1. Iodine (a purple solid) becomes a purple gas.
- This statement describes a phase change from a solid to a gas. Phase changes are physical changes and do not involve a chemical reaction. Therefore, this option does not describe a chemical property.
2. Titanium is less dense than iron.
- Density is a physical property that relates to the mass and volume of a substance. This statement does not involve a chemical change or any reaction, so it does not describe a chemical property.
3. Water freezes at 0°C.
- Freezing is a phase change from a liquid to a solid. Like the first option, this statement describes a physical change, not a chemical change.
4. Sugar burns in air to form water and carbon dioxide.
- This statement describes a chemical reaction where sugar (a compound) reacts with oxygen in the air to produce water and carbon dioxide gases. Burning is a chemical change, and this option describes a chemical property.
Based on the analysis, you are correct in your thinking. The last option, "Sugar burns in air to form water and carbon dioxide," does describe a chemical property because it involves a chemical reaction.
Therefore, the correct answer is indeed the last option.
I hope this helps clarify the concept of chemical properties! If you have any further questions, feel free to ask.