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