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