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Test your basic knowledge |
CSET Science: Chemistry
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Subjects
:
cset
,
science
,
chemistry
Instructions:
Answer 50 questions in 15 minutes.
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.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Components made up of a combination of atoms
alkanes
molecules
anions
electronegativity
2. Positive charged ions
molecules
cations
deposition
organic compounds
3. An atom that has an electrical charge
neutron
ion
half - life
gamma decay
4. Carbons that consist of both hydrogen and carbon atoms and can be alkanes - alkenes - akynes - adn aromatics
hydrocarbons
H2O
molecules
single displacement reaction
5. Occurs when one compound is replaced by an atom of another element like zinc metal
deposition
gamma decay
single displacement reaction
alpha decay
6. Hydrocarbons that have single bonds with a prefix to show the number of carbon atoms - like methane - ethane - propane - butane - pentane - and hexane
matter
alkanes
atomic mass unit
ph neutral
7. The energy required to completely remove an electron from an atom or an ion to make it ositive. the energy increases from left to right as the atomic radius diecreases
evaporation
ionization energy
deposition
HCL
8. The chemical potential for hydrogen - which determines whether or not a chemical is an acid or base
ph neutral
deposition
pH
hydrocarbons
9. A chemical bond in which two atoms share electrons like H2.
bases
covalent bond
groups
organic compounds
10. The conversion of liquid into a gas
covalent bond
evaporation
nitrogen - containing compounds
ph neutral
11. Metals that have low melting points
poor metals
electron affinity
electronegativity
atomic radius
12. 1.66 x 10^-24 g
alkenes
atomic mass unit
stoichiometry
decomposition reaction
13. Radioactive decay that leads to an emission of Helium -4 ion
atomic mass unit
alpha decay
hydrocarbons
ion
14. The bond formed when an anion and a cation unite and form a chemical reaction
NH3
periods
H2O
ionic bond
15. Hydrocarbons that involve carbon - carbon double bonds
evaporation
alkenes
neutron
double displacement reaction
16. Measures of an attraction that an atom has ffor electrons in a chemical bond
electronegativity
poor metals
noble gas
alkanes
17. The smallest form of a particle
ph neutral
atom
radioactive decay
halogens
18. Sodium
evaporation
double displacement reaction
half - life
NaCl
19. A specific type of double deplacement when an acid reactts with a base to form salt and water
condensation
neutralization reaction
groups
nucleus
20. Substances that create hydroxide ions - have a pH level higher than 7 - and can conduct electricity
noble gas
periods
bases
acid
21. The process in which a solid can become a gas - like dry ice
sublimation
molecules
alkanes
single displacement reaction
22. Organic compounds that contain nitrogen - including protein
radioactive decay
pH
acid
nitrogen - containing compounds
23. The degree that two liquids can mix together
beta decay
semi - metals
miscibility
matter
24. The way of ordering the periodic table based on how many protons there are
anions
protons
matter
periods
25. Radioactive decay in which half of a sample decays
alkynes
half - life
nitrogen - containing compounds
valence shell
26. Metals mostly found in the middle of the table that are small and shiny. They are hard and have high melting and boiling points
ion
atomic radius
evaporation
transition metals
27. Energy released when an electron is added to a gaseous atom
valence shell
radioactive decay
electron affinity
protons
28. The outer electron in a shell
valence shell
halogens
NH3
kinetic molecular theory of gas
29. Gases like neon and helium that do not interact with other elements because they havea complete valence shell
hydrocarbons
atomic number
protons
noble gas
30. When a compound breaks down into two or more substances by heating - like the break down of mercury oxide
decomposition reaction
NH3
sublimation
alkaline earth metals
31. The different forms of an electron based on their neutrons
nonmetals
NH3
sublimation
isotopes
32. Radioactive decay in which a beta particle - aka an electron - is emitted
ph neutral
miscibility
isotopes
beta decay
33. Small component of an atom that has a positive electrical charge
hydrocarbons
sublimation
alkenes
protons
34. The conversion of a gas back into a liquid
organic compounds
alkanes
half - life
condensation
35. The transition from a gas into a solid
pH
deposition
groups
single displacement reaction
36. The process of balancing chemical equations
halogens
organic compounds
stoichiometry
half - life
37. When two different substances combine to form a new substance or when a substance breaks down to form two different substance.
chemical reaction
electrons
ionic bond
NaCl
38. A chemical that is sour and stings and receives positive charged atoms when they are dissolved in water
acid
periods
atom
nucleus
39. The center of an atom - which contains protons and neutrons
single displacement reaction
ionization energy
nucleus
double displacement reaction
40. Small component of an atom that has no electrical charge
neutron
combination reaction
beta decay
HCL
41. Metals that conduct electricity
semi - metals
double displacement reaction
alkynes
ion
42. Hydrochloric acid
chemical reaction
stoichiometry
HCL
atomic radius
43. When two reactants form one product - like sulfur dioxide by burning sulfur in the air
combination reaction
molecules
ph neutral
alkaline earth metals
44. Move around the nucleus at the speed of light and have a negative charge
half - life
electrons
noble gas
neutralization reaction
45. Chemicals like sodium that react with water to make alkaline solutions. Part of Group IA. They easily lose their valence electrons to become +1
condensation
matter
radioactive decay
alkali metals
46. Hydrocarbons taht also include oxygen - like alcohols - carbohydrates
organic compounds
half - life
neutron
protons
47. Ammonia
ion
NH3
electrons
alkynes
48. The decay of a nuclei which results in the emission of certain particlces
pH
HCL
double displacement reaction
radioactive decay
49. Negative charged ions
anions
neutralization reaction
transition metals
H2O
50. Distilled water - which has the ph level of 7
electron affinity
gamma decay
neutron
ph neutral
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