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