Properties of Matter
Changes of Matter
Describing Matter
Change of State
Measuring Matter
100
What are physical properties?
characteristics that can be observed without changing the object
100
What is a change of matter that does not change the item?
physical change
100
This state of matter has its particle vibrating in place, and has a fixed shape and volume.
A solid.
100
What is the change of state that goes from a liquid to a solid
Freezing
100
What is the formula for density?
Density = mass / volume
200
What are characteristics that can ONLY be seen during a chemical change?
chemical properties
200
What kind of change occurs on the surface of the bread when its toasted?
chemical change
200
What state of matter takes the shape of its container, the particles flow over each other and it has a fixed volume.
A liquid
200
Name the change of state that goes from a gas to a liquid
Condensation
200
Which is the unit of density? A) N B) kg C) g/cm^3 D) cm
C) g/cm^3
300
How are you senses important for identifying physical properties of matter?
Through your senses you gather information about the world around you and are able to see the properties of an item without altering it. For example its texture, color, temperature, smell, mass, and state of matter.
300
What characteristic BEST describes what occurs during a physical change? A) composition changes B) composition stay the same c) form stay the same D) mass is lost
B) composition stay the same
300
What state of matter has particles that are rapidly moving and very far apart?
A gas
300
List three (3) changes of state where energy is absorbed.
melting, vaporization, and sublimation
300
An object floats in a liquid. What can you say about its density?
The objects density is less than the liquid its floating in.
400
What are the for types of chemical properties?
1. Reactivity 2. Toxicity 3. Oxidation 4. Flammability
400
You are told that a sample of matter gives off energy during a change. Can you conclude what type of change has occurred? Explain.
No, it can be a physical change (change of state) or it can be a chemical change (burning a log).
400
A- Name the properties that liquids and solids share. B- What property do liquids and gas share?
A- they both have a definite volume. B- they both take the shape of the container
400
Explain why your bathroom mirror gets fogged up while you take a hot shower.
The water vaporizes off your skin during the shower and then condenses on the cool glass as tiny fog droplets.
400
A 5.0 cm^3 sample of aluminum has a mass of 15.0 g. Will it float in water? Why?
No, because it has a density of 3.0 g/cm^3 which is greater than water (1.0 g/cm^3).
500
How do chemical and physical properties differ?
Chemical properties can only be observed during a chemical change. Physical properties can be observed using your 5 senses and do not change the substance.
500
Kelly FRIED two eggs for her breakfast while she was waiting for the water to BOIL for her tea. Butter MELTED as she spread it on her toast. What type of changes are the words in BOLD describing? FRIED is ____________change BOIL is _____________ change MELTED is ________________ change
FRIED is Chemical change BOIL is Physical change MELTED is Physical change
500
A scientist 25 mL of a yellow substance into a container and it quickly fills the container. Is this substance a solid, liquid or gas? Why?
The substance is GAS, because it quickly fills the container.
500
Discuss the movement of particles when a substance moves from a solid to a liquid to a gas.
Solid = particles are vibrating solid>liquid = particles gain energy and move more with more space between them liquid = particles are flowing liquid>gas = particles gain most energy and fly away from each other. They escape the liquid.
500
A ling's crown has a volume of 110 cm^3 and a mass of 1,800 g. Pure gold has a density of 19.3 g/cm^3. Is the crown pure gold? Why?
No, because its calculated density is 16.36 g/cm^3 (1800/110) and does not match that of pure gold.
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