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# Unit 2 # Unit 2 - Chemistry
## Questions to Ask Ms.Keras ## Questions to Ask Ms.Keras
1. How do you tell the difference between mechanical mixtures and a mixture/solutions? ✔ 1. How do you tell the difference between mechanical mixtures and a mixture/solutions? ✔
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|Apple Juice| |Apple Juice|
8. **Identify each of the following as a mechanical mixture or a solution** 8. **Identify each of the following as a mechanical mixture or a solution**
a. a pane of clear glass. **Solution** - a pane of clear glass. **Solution**
b. chocolate chip ice cream. **Mechanical Mixture** - chocolate chip ice cream. **Mechanical Mixture**
c. clear apple juice. **Solution** - clear apple juice. **Solution**
d. a pizza. **Mechanical Mixture** - a pizza. **Mechanical Mixture**
e. garbage in a garbage can. **Mechanical Mixture** - garbage in a garbage can. **Mechanical Mixture**
9. **What kind of alloy makes an effective solder material?** 9. **What kind of alloy makes an effective solder material?**
Tin and lead make an effective solder material, as it is fluid at high temperatures but solidifies quickly. Tin and lead make an effective solder material, as it is fluid at high temperatures but solidifies quickly.