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