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