Matter, Phases & Energy
Everything that has mass and takes up space
(Double Points!)
Matter
Which tool would you use to measure the mass of an object?
Triple Beam Balance
or
Electronic Balance
This results in a new substance and is permanently changed
Chemical change
Materials that can be easily separated and keep their own properties
(Double Points!)
Mixture
What are the 3 states of matter?
Solid, Liquid, & Gas
Bonus Question: What does (aq) mean?
(Every group can write answer on paper and pass up for 100 points.)
The state of matter that has a definite shape and volume and has particles that are tightly packed together
Solid
Milliliters and cubic centimeters both measure this.
Volume
Which change occurs when you put ice cream in a blender?
Physical change
Is not uniform throughout and can clearly see a separation and difference.
(Double Points!)
Heterogeneous Mixture
Has monatomic and diatomic forms.
An element
Energy that comes from heat, generated by the movement of particles within an object.
Thermal Energy
What tool would you use to measure the volume of a marble?
Graduated Cylinder
The tarnishing of metal.
Chemical change
Name the Diatomic Elements
Br I N Cl H O F
Bromine, Iodine, Nitrogen, Chlorine, Hydrogen, Oxygen, and Fluorine.
Bonus Question: Which diatomic element is a solid at STP?
(Every group can write answer on paper for 100 points.)
Which states of matter do not have a definite shape?
Gas & Liquid
Law of Conservation states
Matter cannot be created or destroyed, only transferred from one form to another.
What equation would you use to answer the following: How much energy is released when converting 150 grams of H2O (g) to H2O (l) at 100 degrees Celsius.
(Double Points!)
q = m x Hv
(Phase Change between Liquid & Gas)
Bonus Question: What is the value of q?
Every group can write answer on paper and pass up for 200 points.
Name 2 signs that prove a chemical change has occurred
Bubbles,
smell/odor,
color change,
change in temperature
What do these all have in common?
Table Sugar (C6H12O6)
Table Salt (NaCl)
Ammonia (NH3)
Compound
The amount of heat needed to increase the temperature of an object exactly 1 degrees Celsius
Specific Heat Capacity
(Bonus 100 points - Where is it in the reference table?) (Every group can answer - write on a piece of paper)
Dry Ice in water is an example of which process?
Sublimation (solid to gas)
Bonus 100 Points: Is this exothermic or endothermic? (Write on a piece of paper and turn in)
A rectangular block has a mass of 48 grams and length of 5.8 cm, width of 2.6 cm, and height of 1.4 cm. What happens when it is placed in water?
Sinks to the bottom
Calculate volume: 5.8 cm x 2.6 cm x 1.4 cm = 21.112 cm3
Calculate density: 48 grams/ 21.112 cm3 = 2.27 g/cm3
Higher density than water, it will sink.
Name 3 intensive properties
Density
Boiling Point
Melting Point
Color
Luster
Hardness
What is a difference between mixtures and compounds?
(Double Points!)
Mixtures can be physically separated, Compounds can be chemically separated.
Mixtures have no fixed ratios, Compounds have fixed ratios.
In a heating/cooling curve, what happens at a flat line.
What does this mean?
Temperature remains the same, but heat is still being added.
Potential energy (PE) is increasing and Average Kinetic Energy is constant (KE)