stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
2.3 Elements and Compounds Flashcards | StudBud
Explore
/
2.3 Elements and Compounds
2.3 Elements and Compounds
12 terms
·
StudBud Administration
·
178 plays
Imported from external platform
Flashcards
12 cards
F
Practice quiz
P
Host live
L
Questions
12
Answers
1
___ Are used in formulas to indicate the relative proportions of elements in compounds.
Names
Superscripts
Symbols
Subscripts
2
Which of the following would be an example of an element?
iron
water
orange juice
steel
3
Which of the following would be an example of a pure substance?
plastic
100% ethanol
milk
cake flour
4
Which of the following would be an example of a compound?
sulfur
water
aluminum
brass
5
Elements that make up ammonia in NH
3
Nitrogen and Hydrogen
Niobium and Hydrogen
Helium and Nitrogen
Sodium and Hydrogen
6
Heating a chemical compound produces elements
Never True
Always True
Sometimes True
7
Which of the following is a mixture?
sucrose
sodium chloride
carbon dioxide
air
8
The properties of compounds are different from those of their component elements
False
True
9
Passing an electric current through a substance produces oxygen and sulfur; this sub. can't be:
element
compound
mixture
solution
10
If the composition of a sample of matter is fixed, the sample is:
mixture
element
solution
substance
11
Which of the following statements is true about the Periodic Table?
Is an organized assembly of elements discovered
The periodic table is a list of various compounds discovered
The periodic table is randomly organized.
The periodic table has been the same for 50 years.
12
Elements can be easily separated into simpler substances
False
True
