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