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Test your basic knowledge |
CSET Chemistry
Start Test
Study First
Subjects
:
cset
,
science
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
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. Positive
Boyle's Law
Avogadro proposed that
metals have _____ valences
chemical
2. Atoms with an electrical charge
ions
Distillation
Vapor
solubility of gases decreases
3. water is impure with dissolved
concentration of solution is
Salts and gases
solubility of gases decreases
+1 --> +5
4. The nucleus
neutrons stabilize
compounds
makeup of atom
mass =
5. Chemical nature
proton =
most compounds contain
the number of protons establishes
electronis are in shells around
6. Number of molecules of formula units of the reactants and products
electron =
atoms
chemical reactions show the
melt when heated - vaporize slightly
7. Small - dense nucleus of protons and neutrons
atom
Charles' Law
makeup of atom
left side of periodic table
8. Study substances by measuring properties and observing changes
metals have _____ valences
precipitation of a salt occurs when
vertical columns
chemists
9. Hydrogen that is loosely bound
strong base
solubility of gases decreases
acids contain
Englishman John Dalton (1805)
10. Bases
liquid state between
Avogadro proposed that
left side of periodic table
ions
11. Increases with high temperatures
most compounds contain
atoms
number of neutrons almost equals
solubility of solids
12. Attraction of different charges
electrically neutral atoms may share
what acids and bases dissociate in
ionic bond
most compounds contain
13. Solids
Vapor
ions
melt when heated - vaporize slightly
compounds
14. Group of elements with similar chemical properties
ions
electronically neutral atom
acids & bases
vertical columns
15. 7
strong base
metals have _____ valences
Distillation
neutral pH
16. Insulator - but may be a conductor by adding an electrolyte
liquid state between
- ions have _____ electrons
melt when heated - vaporize slightly
pure water is a fine
17. + 1
gas is a _____ fluid
electronis are in shells around
Avogadro's number =
proton =
18. As an ionic melt or solution conducts electricity
gas is a _____ fluid
atoms
compounds
electroloysis occurs
19. Temperature and pressure
gas volums is determined by
in most cases at least on ion is
atom
chemistry
20. Nuclear protons
solids characterized by
neutral pH
electronis are in shells around
proton =
21. Heat - light - catalyst
neutralization
conditions necessary for reaction
vertical columns
makeup of atom
22. water is boiled to...
chemistry
acids & bases
weak acid pH
Vapor
23. Number of protons
number of neutrons almost equals
gas volums is determined by
elements
liquid state between
24. water may be purified by...
+ ions have _____ electrons
Distillation
charted by
octet rule
25. Some molecules in liquid have gained enough energy the attractive forces and become a gas
soltion
Frenchman Lavoisier (1780)
precipitation of a salt occurs when
evaporization
26. Freezing
proton =
0 degrees celcius
conditions necessary for reaction
chemical
27. Solutions with unusual concentrations of either hydrogen or hydroxyl ions
0 degrees celcius
acids & bases
Englishman John Dalton (1805)
gas expands
28. Protons (1 amu) - neutrons (1 amu) - electrons (0 amu)
Boyle's Law
charted by
makeup of atom
+1 --> +5
29. Homogeneous substance of constant composition formed by a chemical union of elements
compounds
electrolyte is a substance that
acids & bases
- ions have _____ electrons
30. Gained
- ions have _____ electrons
solubility of gases decreases
nucleus
bonds between atoms
31. Smallest particles of chemical elements
atoms
compounds written with
neutrons stabilize
what bases contain
32. Dissociates to many ions capable of transporting electric charge
Russian Mendeleev (1869)
electrolyte is a substance that
most compounds contain
neutral pH
33. 1
soltion
- ions have _____ electrons
electron =
neutron =
34. Devised periodic table
Russian Mendeleev (1869)
matter
the number of protons establishes
strong acid pH
35. Electrons surround
neutron =
weak acid pH
nucleus
electroloysis occurs
36. 1
in most cases at least on ion is
law of conservation of mass
strong acid pH
the number of protons establishes
37. Summarizes the chemical behavior of the element
ionic bond
valence number
atomic weight determined
chemical elements
38. Simplest chemical substances
chemical reactions show the
gas is a _____ fluid
bonds between atoms
elements
39. Concentration of solute that a solution can hold
most compounds contain
solubility of a substance is
compounds
gas expands
40. Atomic # = # of protons
chemical elements
most solutions have a _____ solvent
weak acid pH
alkali metals
41. Aqueous solutions & modify the concentration of hydrogen ions
what acids and bases dissociate in
what acids and bases are measured by
chemical elements
Distillation
42. 4
valence number
electron =
weak acid pH
matter
43. Electrons = protons
liquid state between
neutrons stabilize
electronically neutral atom
bonds between atoms
44. Liquid
most solutions have a _____ solvent
+1 --> +5
Avogadro proposed that
octet rule
45. Splitting of atom
makeup of atom
subatomic particles
chemistry
Vapor
46. With high temperature
chemists
Russian Mendeleev (1869)
solubility of gases decreases
atomic weight determined
47. Water
aqueous solution has _____ as solvent
strong acid pH
- ions have _____ electrons
acids & bases
48. Lost
- ions have _____ electrons
acids contain
+ ions have _____ electrons
Charles' Law
49. Any tangible matter is _____ in nature
chemical
acids contain
size of atom determine
soltion
50. 10
weak base
solid - liquid - gas is dependent on
ionic bond
alkali metals