What is the smallest part of a substance that can exist?

Chemical Compounds and Formulas

Interactive Video
•
Chemistry, Science, Physics
•
6th - 8th Grade
•
Hard

Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Compound
Atom
Element
Molecule
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How many elements are approximately known?
200
150
100
50
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is the correct symbol for Neon?
Ne
N
No
Neon
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the symbol for sodium, and what is its origin?
S, from the English name
Na, from the Latin name
Na, from the English name
So, from the Greek name
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What do two hydrogen atoms chemically bonded together form?
A molecule
A compound
A mixture
An element
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the chemical formula for water?
H2O
OH2
H2O2
HO2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which compound is formed by sodium and chlorine atoms in a 1:1 ratio?
Na2Cl
NaCl2
ClNa
NaCl
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