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Unit 2 ch1
| Question | Answer |
|---|---|
| Why did the food coloring separate into different | The food coloring separated into different dyes because the molecules in the dyes had different properties |
| How are different kinds of molecules different and similar? | Different molecules can have different sizes, weights, shapes, and attraction strength. They are similar because they are all made of atoms and they all make up matter. |
| All molecules of one substance are the______ | Same |
| Different molecules have different_____ | Properties |
| All matter is made up of_____ | Atoms |
| _____ are the smallest pieces of matter | Atoms |
| _______molecules are highly attracted to each other and many other kinds of molecules. | Water |
| ______________ is a technique used to separate mixtures into their component substances. | Chromatography |
| Property | what you can observe or measure about something that helps you identify or describe it. |
| Substance | matter that is made of only one kind of atom or molecule. |
| Mixture | matter that is made of more than one substance. |
| Observe | to use any of the five senses to gather information about something. |
| Matter | the stuff that things are made of. |
| Atom | a tiny piece of matter that is too small to be seen. |
| Molecule | a group of atoms joined together in a particular way. |
| Model | something scientists make to answer a question about the real world. |
| Attract | to pull an object, even without touching it. |
| Evidence | information that supports an answer to a question. |
| inference | something you figure out based on observations and what you already know. |