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