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