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