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