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