Phase of Matter
___________Particles have the MOST kinetic energy (motion)
Gas particles
Increasing the temperature of an object is
a. Adding thermal energy
b. Removing thermal energy
a. Adding thermal energy
What is the equation for density?
Mass/ Volume
Mass divided by volume
Elements on the LEFT side of the staircase are known as..
Metals
Ripping a paper in half is an example of a...
Which phase of matter particles can fill up any container that it is in? (spreads out)
Gas particles
Gas molecules
Gas
When an object gets COLDER, what happens to the kinetic energy of the molecules?
Kinetic energy decreases
Slows down
JJ had a graduated cylinder with an initial (start) volume of 130 mL and when he dropped his object, the final volume was 150 mL. What was the volume of his object?
20 mL
Which group are noble gasses in?
Group 18
Burning wood to create ash is an example of
Chemical Change
Which phase of matter has molecules that are so close together and vibrate?
Solid Molecules
Ms. Young wants to freeze popsicles for her friends at. book club. What is happening to the juice molecules as it enters the freezer.
Molecules compact
Molecules move closer together
Molecules start to slow down
Jazelle has an object with a length of 2 cm, height of 1 cm and width of 2 cm. What is the volume of her object? INCLUDE UNITS
4cm3
Elements in the same _________ have similar properties.
Group
Freezing ice is a....
Physical Change
Boiling water is what phase change?
ex of phase change: solid to liquid
liquid to gas
What happens to the thermal and kinetic energy when you microwave popcorn?
Thermal energy added
Kinetic energy increases (speeds up)
Daquan has an object with a mass of 110.23g and a volume of 123.1 cm3. What is the density of his object rounded to the nearest TENTH place. Include units.
0.9 g/cm3
Uh oh! Mrs. Bond ran out of Ca (calcium) for a chemical reaction, what can she replace this element with?
Be
Mg
Sr
Ba
Ra
Mixing an acid and a base and creating a gas is considered to be a ....
Chemical Change
What phase change occurs when freezing an ice cream cake?
Liquid to Solid
What happens to the thermal and kinetic energy of the grass molecules when snow falls on them?
Kinetic energy decreases (slows down)
Tammy has an object with a mass of 3.232g and a volume of 5cm3.
1. What is the density of her object rounded to the nearest hundredth place. Include units.
2. Will her object sink or float in water?
1) 0.65g/cm3
2) float
CO2 (carbon dioxide) is NOT in the periodic table because is is considered to be a
a. Mixture
b. Element
c. Compound
Compound
Mrs. Bond's boyfriend, Nick Jonas loves to set off fireworks during the Fourth of July. When he lit the fireworks, it exploded and we saw light and sparks.
What chemical property is shown when lighting fireworks?
Light
Sparks
Loud noise