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Matter

QuestionAnswer
1. Where are transition metals located on the periodic table? In the middle and the bottom
2. Where are the least reactive elements on the periodic table? Far right , last group on the periodic table (Noble gases)
3. Where are the most reactive elements on the periodic table? Far left (Alkaline earth metals)
4. Where are the metalloids on the periodic table? On the zigzag line (between metals and nonmetals)
5. Where are the nonmetals on the periodic table? Upper right hand area of the periodic table
6. Where are the metals on the periodic table? Left side of the table
7. What is the smallest part of an element? A atom
8. What is the smallest part of a compound? A molecule
9. What does a period represent? Energy levels: rows
10. What does a group represent? Number of valance electrons(also called a family); colums
11. What is the definition of mass? The amount of matter in a object
12. What is the Law of Conservation of Matter? Matter is neither created nor destroyed
13. What is the definition of density? How tightly packed something is
14. What is the formula for density? Mass/Volume=Density (usually shows up as grams per milliliter g/mL)
15. What are the types of physical properties? Texture, size, color, odor, melting point, boiling point, freezing point, phase of matter, solubility, conductivity luster and density
16. What are the types of chemical properties? Reactivity, toxicity, flammability
17. What is the definition of melting point? The temperature at which a substance changes from a solid to a liquid; the same temp as the freezing point
18. What is the definition of combustibility? How easy something will set on fire
19. What is the definition of reactivity? How easily an atom has a chemical reaction with another atom
20. What is the definition of boiling point? The temperature at which a liquid turns into a gas
21. What is a solute? The substance that dissolves in a mixture
22. What is a solvent? A substance that can dissolve the other substance in a mixture
23. What is a solution? Two substances that are equally mixed together, all parts are the same ; solute dissolved in a solvent
24. What is a homogenous mixture? Mixture that has the same combination of parts throughout the mixture; pure substance
25. What is a heterogeneous mixture? A mixture that is not that same throughout, different parts : easily separated
26. What does the atomic number represent? The number of protons (also usually number of electrons)
27. What does the atomic mass represent? The number of protons+neutrons
28. What is a noble gas? Located on the far right; least reactive
29. How do you find the number of neutrons? Round the atomic mass to the nearest whole number(mass number), and then subtract the atomic number from this number
30. What are reactants and products? A reactant is when a substance undergo a chemical change; what you have at the beginning and add together. A product is the result or what is left from the chemical change
Created by: ArielN