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