Property Detectives
Physical or Chemical?
Solubility Station
Matter Matters
Mixture Mission
Science Sleuths
Vocab Vault
100
A student says, "This rock feels rough when I touch it." What physical property is being described?
Texture
100
A scientist measures how long a pencil is without changing what the pencil is made of. Is the property being measured physical or chemical?
physical
100
You stir powdered drink mix into water and it becomes part of the water. What property does this show?
solubilibty
100
Scientists ___________ matter based on its characteristics. (put substances into groups)
classify
100
A bowl contains cereal, marshmallows, and raisins. You can easily see the different parts. What type of mixture is this?
heterogeneous
100
A balloon is filled with water. The water takes the shape of the balloon. Which state of matter is the water?
a liquid
100
This is the substance that gets dissolved when making a solution.
solute
200
A piece of metal can be pulled toward a magnet. Which property are you observing?
magnetism
200
A piece of paper is able to catch fire and burn. Is this describing a physical or chemical property?
chemical
200
In a cup of hot chocolate, the cocoa mix is the substance being dissolved. Is the cocoa mix the solute or solvent?
solute
200
A substance is made of only one type of atom. Is it an element or a compound?
element
200
Two or more substances are physically combined but are NOT chemically combined. What do you have?
a mixture
200
A student wants to find out whether a mystery object is attracted to a magnet. Which physical property should the student test?
magnetism
200
The liquid that a substance dissolves into.
solvent
300
Two objects take up the same amount of space, but one has much more matter packed into that space. Which property would help explain the difference?
density
300
Which type of property can be observed or measured without the substance undergoing a chemical reaction?
physical property
300
In a cup of hot chocolate, the liquid that the cocoa mix dissolves into is called what?
solvent
300
A substance contains more than one type of atom, but it is still a pure substance. What is it?
compound
300
You take a spoonful from the top of a mixture and another spoonful from the bottom. Both samples are the same. What type of mixture is it?
homogeneous
300
You have two identical-sized objects. Object A has more matter packed into it than Object B. Which object has greater density?
object A
300
The mixture created when a solute dissolves into a solvent.
solution
400
You have two pieces of material. One bends and stretches without breaking, while the other snaps. Which property would you compare?
flexibility
400
A scientist wants to know how easily a substance reacts with another substance. Which chemical property should the scientist investigate?
reactivity
400
A student keeps adding a substance to water. Eventually, the substance stops dissolving and collects at the bottom. What has happened?
saturation point
400
A student has collected this data. Which property of matter would help them tell the difference between Steel and Iron? Why?
color because steel and iron have the same conductivity, magnetism, and reflectivity.
400
Which type of mixture would you expect to have different amounts of its ingredients in different parts of the mixture?
heterogeneous
400
A student says, "Salt water is heterogeneous because salt and water are two different substances." What's wrong?
Salt water is a homogeneous mixture because the substances are evenly mixed.
400
The ability of one substance to dissolve into another substance.
solubility
500
A mirror and a piece of cardboard are both placed under a light. The mirror looks shiny and glassy, while the cardboard looks dull. Which physical property explains this difference?
reflectivity
500
A student says, "If I can see a property, it must be a physical property." Is this always true? Explain.
No. Chemical properties describe how a substance behaves during a chemical reaction, so they can be seen once the chemical reaction takes place.
500
You dissolve sugar in water. The sugar is no longer visible, but the water is now sweet. Has the sugar disappeared? Explain.
The sugar has dissolved and become part of the solution. Dissolved substances cannot be seen because they become part of the water
500
A student observes a piece of metal that is silver, conducts electricity, is not magnetic, and has metallic reflectivity. Which metal sample is the student observing?
aluminum
500
A student says, "A mixture must be impossible to separate because its ingredients are combined." What is wrong with this statement?
Mixtures can be separated by physical means, such as filtering, evaporation, or distillation.
500
Explain what happens when you add the drink mix to water.
Use at least THREE of these words in your answer:
-solute — solvent — solution — soluble — solubility — saturation point
The drink mix is the solute, and the water is the solvent. When the drink mix dissolves in the water, it forms a solution. The drink mix is soluble because it can dissolve in the water.
500
A substance that does not dissolve in another substance.
insoluble