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