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