laws of chemical combination
Authored by uzma Naimat
Chemistry
9th Grade
NGSS covered
Used 218+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
The percentage of copper and oxygen in samples of “CuO” obtained by different methods were found to be the same. This illustrates the law of:
Constant proportions
Conservation of mass
Multiple proportions
Reciprocal proportions
Tags
NGSS.HS-PS1-7
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
A balanced chemical equation is in accordance with:
Avogadro's law
Law of conservation of mass
Law of multiple proportions
Law of reciprocal proportions
Tags
NGSS.HS-PS1-7
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Name of the scientist who postulated law of conservation of matter
J.J.Thomson
Antoine Lavoisier
Joseph Louis Proust
None of the above
Tags
NGSS.HS-PS1-7
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
An unbalanced chemical reaction represents a violation of which law?
Law of multiple proportions
Avogadro's law
Law of reciprocal proportions
None of the above
Tags
NGSS.HS-PS1-7
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Law of constant proportion is also referred to as law of definite proportion
True
False
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Name the scientist who put forth the law of constant proportion
Rutherford
Newton
Antoine lavoisier
J.L.Proust
Tags
NGSS.MS-PS1-5
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
What is the ratio of C:O in CO2?
4:8
3:7
8:4
2:4
Tags
NGSS.MS-PS1-1
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