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