Properties
Changes
Matter
Temperature
Wildcard Review
Density
1
This property means a material is good and allowing heat to transfer through it quickly
Conductor
1
cutting paper is a __________- change
physical
1
this state of matter has more kinetic energy than a solid
liquid , gas, or plasma
1
What is the name for the coldest temperature that could possibly occur?
Absolute Zero
1
Which state of matter are most elements in the periodic table?
Solid
1
definition for density
&
formula for density
amount of matter in a certain sized space
D= M/V
2
Whether or not something reacts with acid is a _______ type of property
Chemical
2
list 2 pieces of evidence that would tell you a chemical change has taken place
color change , heat is gained or lost, bubbles form, new substance is created, etc.
2
the phase change from gas to liquid is called _____________-
condensation
2
DAILY DOUBLE: The meteorologist said it would be a 26 degree Celsius day. What is that temperature in Kelvin?
26 + 273
= 299 K
2
What is the mass of an electron in amu (round to the nearest whole number)
0 amu
2
which is more dense?
water
OR
water after you add salt
why?
water after you add salt, because more matter in in the same sized amount of water, thanks to dissolved salt
3
This property is how much matter is in a certain sized space
Density
3
Explain how a color change might occur without there being any new substances created: ____________
painting a boat, adding color on the surface of a fake gold coin, etc.
3
Which of the following chemical equations tells you that new matter was created?
1 NaOH -> NA+ & OH-
2 C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + Energy
3 H₂O(l) + heat → H₂O(g)
2 C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + Energy
Option 1 wrong because nothing new was made, just dissolvedOption 3 is a phase change and nothing new was made
3
This word means that the energy of the reaction decreased, because heat left the matter
Exothermic (heat goes outside the reaction)
3
Which organelle is responsible for transporting proteins throughout the cell
ER - Endoplasmic Reticulum
3
three liquids have the following densities:
water 1.0 g/ml
soda 2.34 g/ml
Orange Juice 0.999 g/ml
Describe the order of the liquids if they're poured into a jar
lower densities float =
orange juice on top of water on top of soda
4
Choose all of the following properties that can be used to tell if a substance is pure or not:
mass /volume /density /state of matter / melting point
Density & Melting Point
4
DAILY DOUBLE: Ionization of a gas to plasma would be a _____________ change
physical (ALL phase changes are physical changes & reversible)
4
what is it called when a solid like dry ice turns into a gas and skips the liquid phase?
Sublimation
4
This word describes a reaction that absorbs heat from the surroundings, usually making it feel cold
Endothermic (Endo is inside, so heat goes into it)
4
An atom has an atomic mass of 137, with 45 electrons. How many neutrons are in this atom?
137 - 45 = 92 neutrons
4
when you cut a 50g stone that has a volume of 10 cm3 in half, describe what happens to the Mass, Volume, and Density of the rock
Mass cuts in half
Volume cuts in Half
Density remains constant
5
list 2 physical properties of matter
&
list 2 chemical properties of matter
Physical: answers will vary
Chemical: answers will vary
5
The Law of Conservation of Mass tells us that __________________________
the mass will stay constant before & after any reaction, no mass is created or destroyed
5
What is the name of the scientific theory that explains how matter gains more energy and can change states of matter if they gain enough energy
Kinetic Molecular Theory
5
What is the boiling point of water, in BOTH:
Celsius & Kelvin
100 degrees Celsius
373 Kelvin
5
DAILY DOUBLE:
Using your whiteboard, draw the orientation of the Earth, Moon, & Sun during a Full moon phase
5
A cube of aluminum has a mass of 160g and a side length of 2cm
What is the density?
160g mass
2cm x 2cm x 2cm = 8cm3 volume
160g/8cm3 = 20g/cm3