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