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