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