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Unit 2 Ch. 1
Study Guide
Question | Answer |
---|---|
Why did the food coloring seperate into different dyes? | The food coloring seperated into different dyes because the molecules in the dyes had different properties As the dyes moved up the paper they were attracted to the water molecules the dyes seperated because their molecules were different sizes and weight |
How are different kinds of molecules different and similar? | Different molecules can have different sizes, weights, shapes, and attraction strength. |
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 seperate 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 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 to small to be seen. |
Molecule | A group of atoms joined together in a particular way. |
Model | Something scientist 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. |