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Unit 2 Ch.1
Science
Question | Answer |
---|---|
Why did the food coloring separate into different dyes? | The food coloring separated 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 separated because their molecules were different sizes and w |
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 |
what you can observe or measure about something that helps you identify or describe it. | Property |
matter that is made of only one kind of atom or molecule. | Substance |
matter that is made of more than one substance. | Mixture |
to use any of the five senses to gather information about something. | Observe |
the stuff that things are made of. | Matter |
a tiny piece of matter that is too small to be seen. | Atom |
a group of atoms joined together in a particular way. | Molecule |
something scientists make to answer a question about the real world. | Model |
to pull an object, even without touching it. | Attract |
information that supports an answer to a question. | Evidence |
something you figure out based on observations and what you already know. | Inference |