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