Properties of matter
Changing from a solid straight to a gas is...
What is sublimation
Mixtures that have components that are not uniform or have regions with different properties.
What are heterogenous mixtures.
On the PH scale which numbers signify a base?
What are numbers 8-14.
DAILY DOUBLE
Which of the following are examples of heterogeneous mixtures?
salad, lemonade, or blood,
what is salad
The process by which one or more substances change into a new substance is?
What is a chemical reaction.
What is the difference between the solute and the solvent? Give an example.
Which ion is produced when a base is dissolved in water?
What is hydroxide?
Which property of iron helps you separate nails from a mixture that includes, wood, glass and gravel?
What is magnetism
those properties that describe how different kinds of matter combine and REACT with each other to form new substances.
What are chemical properties.
In this mixture, the atoms in the solvent have enough kinetic energy to push the particles around and keep them from settling out.
What is a colloid.
What is the PH of distilled water?
What is 7
What are some intensive properties of matter?
What are
• color
• density
• luster
• hardness
• temperature
Which substance, maple syrup or vegetable oil, has a higher viscosity?
Maple syrup has a higher viscosity because it is thicker and doesn’t flow as easily as vegetable oil.
A solution with a pH of 2 a weak acid or a strong acid?
A solution with a pH of 2 is a strong acid.
DAILY DOUBLE
What are some extensive properties of matter?
What are
• volume
• length
• mass
• weight
DAILY DOUBLE
What is the difference in the flow of thermal energy at the melting point and freezing point of water?
At the melting point of water, energy is added to the system. At the freezing point, energy is removed from the system.
What would you observe if you added a crystal of sugar to a saturated sugar solution?
The extra sugar will not dissolve because the solution is already saturated.
Why is PH an intensive property?
pH does not depend on the amount of substance present, which means that the property is intensive.
A natural biological cooling process is sweating. Using your knowledge of endothermic and exothermic, explain why your body feels cooler when it sweats.
As the sweat from the body is produced, it evaporates as the heat produced by the body warms it. This process removes heat from the body and you feel cooler.