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Matter
Question | Answer |
---|---|
1. Where are transition metals located on the periodic table? | in the middle and at the bottom |
2. Where are the least reactive elements on the periodic table? | to the far right hand |
3. Where are the most reactive elements on the periodic table? | to the far left hand |
4. Where are the metalloids on the periodic table? | at the zigzag line |
5. Where are the nonmetals on the periodic table? | upper right area + hydrogen |
6. Where are the metals on the periodic table? | from the left of the zigzag |
7. What is the smallest part of an element? | An Atom |
8. What is the smallest part of a compound? | A Molecule |
9. What does a period represent? | Rows - Left to Right/energy levels |
10. What does a group represent? | Column - Up to Down/Number of valence electrons(family) |
11. What is the definition of mass? | The amount of matter in an object |
12. What is the Law of Conservation of Matter? | Matter can't be created nor destroyed |
13. What is the definition of density? | How tightly packed the atoms in a object are |
14. What is the formula for density? | mass/volume (usually shows up as g/mL) |
15. What are the types of physical properties? | Color, Odor, Size, Hardness, Luster, Phase of Matter, Mass, Density, Boiling point, Melting point, Solubility, and Conductivity. |
16. What are the types of chemical properties? | Reactivity, Combustibility, and Toxicity |
17. What is the definition of melting point? | the point at which a substance changes from a solid to a liquid; the same temperature as the freezing point. |
18. What is the definition of combustibility? | the ability a substance has to burn; |
19. What is the definition of reactivity? | how easily an atom has a chemical reaction with another element. |
20. What is the definition of boiling point? | the point at which a substance changes from a liquid to a gas |
21. What is a solute? | a substance that is dissolved into another substance |
22. What is a solvent? | is the substances that devolves a solute |
23. What is a solution? | substance in a mixture are evenly distributed; a solute dissolved in a solvent |
24. What is a homogenous mixture? | a mixture that has the same proportions of its components throughout any given sample; pure substance |
25. What is a heterogeneous mixture? | A mixture that is not uniform in composition; can be easily separated |
26. What does the atomic number represent? | The amount of protons in a element |
27. What does the atomic mass represent? | number of neutrons + protons |
28. What is a noble gas? | Far right and extremely low reaction rates |
29. How do you find the number of neutrons? | you have to subtract the number of protons from the mass number |
30. What are reactants and products? | usually the reactants are on the right while products are on the left. |