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Test your basic knowledge |
Basic Chemistry
Start Test
Study First
Subjects
:
science
,
chemistry
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. A covalent bond in which one pair of electrons is shared
atomic number
single bond
ionic bond
inorganic compound
2. The smallest particle of an element that retains the properties of the element
atomic number
atom
atomic number
molecule
3. Occurs when atoms share electrons
covalent bond
compound
isotope
ionic bond
4. Indicates the number and types of atoms in a molecule
chemical reaction
nucleus
chemical formula
covalent bond
5. Atoms that are held together by covalent bonds
chemical formula
neutron
molecule
covalent bond
6. Subatomic particle having a positive charge; found in nucleus
proton
valence electrons
isotope
chemical reaction
7. Atoms having the same numbers of protons but different numbers of neutrons
isotope
organic compound
product
chemical formula
8. Indicates the number and types of atoms in a molecule
product
chemical formula
matter
organic compound
9. Anything that occupies space and has mass
matter
compound
chemical reaction
single bond
10. Substance made of two or more elements & one being carbon
product
proton
radioactive isotope
organic compound
11. Electrons in the outermost energy level; they are involved in bond formation
structural formula
valence electrons
isotope
element
12. A pure substance that cannot be broken down into other substances by chemical reactions
double bond
covalent bond
covalent bond
element
13. Substance made of two or more elements & none of which is carbon
covalent bond
isotope
inorganic compound
product
14. Interaction of substances that lead to the formation of new substances
electron
chemical reaction
structural formula
neutron
15. Substance containing two or more elements chemically combined in a fixed ratio
structural formula
reactant
compound
product
16. An unstable atom in which the nucleus decays (breaks down) releasing particles and energy
atomic number
radioactive isotope
ion
structural formula
17. A covalent bond in which one pair of electrons is shared
ion
single bond
matter
structural formula
18. Subatomic particle without a charge; found in nucleus
neutron
atomic number
chemical formula
product
19. Subatomic particle having a positive charge; found in nucleus
proton
chemical formula
atomic number
isotope
20. Protons and neutrons together; make up the center of an atom
electron
element
nucleus
organic compound
21. A covalent bond in which four valence electrons are shared between two atoms
molecule
chemical reaction
proton
double bond
22. Indicates the formation of new substances from previous substances
atomic number
chemical reaction
product
element
23. Atoms that are held together by covalent bonds
nucleus
element
reactant
molecule
24. Subatomic particle having a negative charge; not in nucleus but surrounds it
double bond
ionic bond
electron
radioactive isotope
25. The starting materials for a reaction; found on left side of chemical equation
element
molecule
ion
reactant
26. Occurs when atoms transfer electrons to other atoms
ionic bond
chemical reaction
single bond
organic compound
27. The smallest particle of an element that retains the properties of the element
single bond
atom
double bond
organic compound
28. Protons and neutrons together; make up the center of an atom
single bond
nucleus
electron
chemical reaction
29. Shows the number and types of atoms in a molecule and how they are arranged
structural formula
valence electrons
ionic bond
molecule
30. Atoms that have lost or gained electrons
product
ion
inorganic compound
structural formula
31. Anything that occupies space and has mass
proton
single bond
nucleus
matter
32. An unstable atom in which the nucleus decays (breaks down) releasing particles and energy
molecule
proton
inorganic compound
radioactive isotope
33. Electrons in the outermost energy level; they are involved in bond formation
product
valence electrons
proton
electron
34. Atoms having the same numbers of protons but different numbers of neutrons
isotope
chemical formula
ion
covalent bond
35. Indicates the formation of new substances from previous substances
neutron
atom
inorganic compound
chemical reaction
36. Atoms that have lost or gained electrons
atom
radioactive isotope
ion
inorganic compound
37. Ending materials of a reaction; found on right side of chemical equation
proton
ionic bond
chemical formula
product
38. Substance made of two or more elements & one being carbon
atomic number
ion
atom
organic compound
39. Subatomic particle without a charge; found in nucleus
electron
covalent bond
double bond
neutron
40. A covalent bond in which four valence electrons are shared between two atoms
organic compound
covalent bond
neutron
double bond
41. Occurs when atoms transfer electrons to other atoms
isotope
neutron
chemical formula
ionic bond
42. Substance containing two or more elements chemically combined in a fixed ratio
nucleus
compound
element
valence electrons
43. Subatomic particle having a negative charge; not in nucleus but surrounds it
structural formula
product
electron
molecule
44. Substance made of two or more elements & none of which is carbon
element
molecule
inorganic compound
reactant
45. Interaction of substances that lead to the formation of new substances
chemical reaction
isotope
chemical formula
molecule
46. Ending materials of a reaction; found on right side of chemical equation
chemical reaction
radioactive isotope
atom
product
47. The starting materials for a reaction; found on left side of chemical equation
atomic number
organic compound
valence electrons
reactant
48. A pure substance that cannot be broken down into other substances by chemical reactions
valence electrons
compound
electron
element
49. Occurs when atoms share electrons
inorganic compound
covalent bond
double bond
neutron
50. Identifies a specific element; equals the number of protons in an atom of each element
valence electrons
double bond
nucleus
atomic number