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