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