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