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