Help
Contact
For teachers and institutes
Search courses, problems, tests…
A
A
>_
StemPy Lab
Courses ▾
Problems ▾
Practice ▾
Mock Tests
Classes
Groups
Community ▾
A
A
Problems
/
States of Matter
/
Change of State
Change of State
Chemistry
+ Upload a Problem
More in States of Matter
Particles of Matter
Change of State
Evaporation and Cooling
All Levels
High School (9–10)
General
All
Easy
Medium
Hard
Sort
Mixed
Newest first
Oldest first
A to Z
10 problems
Type:
Any
Conceptual
Numerical
1.
A mixture contains sand and ammonium chloride.
High School (9–10), General · Change of State
StemPy Lab
Medium
2.
Name two ways to change a gas into a liquid.
High School (9–10), General · Change of State
StemPy Lab
Medium
3.
From this list, choose the substances that change straight from a solid to a gas when they are…
High School (9–10), General · Change of State
StemPy Lab
Easy
4.
A piece of ice of mass 0.08 kg, at 0 °C, is dropped into 0.4 kg of lemonade at 30 °C.
High School (9–10), General · Change of State
StemPy Lab
Hard
5.
The graph shows 1 kg of ice heated until it becomes steam.
High School (9–10), General · Change of State
StemPy Lab
Medium
6.
In a laundry, 0.45 kg of steam at 100 °C condenses inside the pipes of a pressing machine and…
High School (9–10), General · Change of State
StemPy Lab
Medium
7.
How much heat is needed to melt 1.6 kg of ice at 0 °C?
High School (9–10), General · Change of State
StemPy Lab
Easy
8.
The melting and boiling points of four substances, at normal pressure, are: nitrogen 63 K and 77 K…
High School (9–10), General · Change of State
StemPy Lab
Medium
9.
Water is at 355 K, at normal pressure. What is this in degrees celsius, and is the water a solid, a…
High School (9–10), General · Change of State
StemPy Lab
Easy
10.
Change to kelvin: (a) 57 °C, (b) -120 °C. Change to degrees celsius: (c) 520 K.
High School (9–10), General · Change of State
StemPy Lab
Easy
StemPy LabStemPy LabStemPy Lab