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