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  1. Problems
  2. /States of Matter

States of Matter

Chemistry
+ Upload a Problem
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30 problems
Type:
1.
A wet bed sheet on a line holds 350 g of water.
High School (9–10), General · Evaporation and CoolingStemPy LabStemPy Lab
Hard
2.
On Tuesday it is sunny and windy, and a wet cloth dries in 2 hours.
High School (9–10), General · Evaporation and CoolingStemPy LabStemPy Lab
Medium
3.
On two days the temperature is 35 °C. On the first day the relative humidity is 30 %, and on the…
High School (9–10), General · Evaporation and CoolingStemPy LabStemPy Lab
Medium
4.
Why are cotton clothes better than polyester clothes on a hot summer day?
High School (9–10), General · Evaporation and CoolingStemPy LabStemPy Lab
Easy
5.
Water in a pot of unglazed clay stays cooler than water in a steel pot, on a hot day.
High School (9–10), General · Evaporation and CoolingStemPy LabStemPy Lab
Medium
6.
During a football match, 120 g of sweat evaporates from a player's skin.
High School (9–10), General · Evaporation and CoolingStemPy LabStemPy Lab
Medium
7.
A drop of acetone, 0.2 g, and a drop of water of the same mass are put on the back of a hand.
High School (9–10), General · Evaporation and CoolingStemPy LabStemPy Lab
Easy
8.
Three dishes hold 150 g of water each. After 3 hours, the water left is: a wide dish in the sun, 87…
High School (9–10), General · Evaporation and CoolingStemPy LabStemPy Lab
Medium
9.
Four plates hold the same amount of water.
High School (9–10), General · Evaporation and CoolingStemPy LabStemPy Lab
Medium
10.
Say whether each is evaporation or boiling, and give a reason.
High School (9–10), General · Evaporation and CoolingStemPy LabStemPy Lab
Easy
11.
A mixture contains sand and ammonium chloride.
High School (9–10), General · Change of StateStemPy LabStemPy Lab
Medium
12.
Name two ways to change a gas into a liquid.
High School (9–10), General · Change of StateStemPy LabStemPy Lab
Medium
13.
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 StateStemPy LabStemPy Lab
Easy
14.
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 StateStemPy LabStemPy Lab
Hard
15.
The graph shows 1 kg of ice heated until it becomes steam.
High School (9–10), General · Change of StateStemPy LabStemPy Lab
Medium
16.
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 StateStemPy LabStemPy Lab
Medium
17.
How much heat is needed to melt 1.6 kg of ice at 0 °C?
High School (9–10), General · Change of StateStemPy LabStemPy Lab
Easy
18.
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 StateStemPy LabStemPy Lab
Medium
19.
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 StateStemPy LabStemPy Lab
Easy
20.
Change to kelvin: (a) 57 °C, (b) -120 °C. Change to degrees celsius: (c) 520 K.
High School (9–10), General · Change of StateStemPy LabStemPy Lab
Easy
21.
A syringe holds 75 mL of air on a cold morning, when air has a density of 1.3 kg/m³.
High School (9–10), General · Particles of MatterStemPy LabStemPy Lab
Hard
22.
Make a table for a solid, a liquid and a gas.
High School (9–10), General · Particles of MatterStemPy LabStemPy Lab
Medium
23.
Here are some densities: water 1000 kg/m³, petrol 740 kg/m³, cork 240 kg/m³, teak wood 650 kg/m³…
High School (9–10), General · Particles of MatterStemPy LabStemPy Lab
Medium
24.
A bottle of glycerine holds 0.0005 m³ of it, with a mass of 0.63 kg.
High School (9–10), General · Particles of MatterStemPy LabStemPy Lab
Medium
25.
Put these in order, from the strongest force between particles to the weakest: a rubber band, a…
High School (9–10), General · Particles of MatterStemPy LabStemPy Lab
Medium
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