States of Matter & Density
Gas Laws
Atomic Theory
Element, Compound, Heterogeneous, Homogeneous Mixtures
Physical vs. Chemical Property or Change
100
Which physical property is determined by the ratio of mass to volume?
What is density?
100
When pressure is constant, an increase in temperature results in a __________ in volume.
What is increase?
100
What two subatomic particles account for the mass in an atom?
What is proton and neutron?
100
Carbon dioxide gas (CO2) is a chemical combined substance that always consists of 1 carbon atom for every 2 oxygen atoms. This is an example of a(n) _________ .
What is a compound?
100
Water boils in an open container as shown in the diagram below. The bubbles that form in the water are evidence of a ______ ?
What is physical change?
200
This state of matter has particles that vibrate and are close together due to strong intermolecular forces.
What is a solid?
200
If a student places a 4 cubic cm marshmallow in a syringe and then pushes the plunger towards the marshmallow, the pressure will ____________ (increase/decrease) and the marshmallow will get ______________ (bigger, smaller).
What is increase; smaller?
200
How many protons are in an atom of Fluorine-20?
What is 9 protons?
200
A student uses a magnet to separate the 3 components of an unknown substance. This means that the unknown substance could be a(n) __________ .
What is heterogeneous mixture.
200
What can be observed when an object is changing into a new substance?
What is a chemical property?
300
An irregular shaped object with a mass of 30g when placed in a graduated cylinder with an initial volume of 20mL now has a volume of 26mL and will have a density of _____ g/mL.
What is 5 g/mL?
300
In a closed container at 1.0 atmosphere, the temperature of a sample of gas is raised from 300 K to 400 K. What will be the final pressure of the gas?
What is 1.3 atm?
300
Which subatomic particle causes the difference in isotopes?
What is neutrons?
300
Scientists found a new substance on planet X. After testing the substance, it was determined to be composed of all of the same type of atoms and could not be separated through chemical means. This means that the unknown substance could be a(n) __________ .
What is an element?
300
A cup of hot chocolate at 30 degrees Celsius.
What is a physical property?
400
This state of matter when heated no longer has particles that flow but has particles that are far apart and are in constant motion.
What is a liquid?
400
If there is 5.60 liters of gas in a piston at a pressure of 1.50 atm and compress the gas until its volume is 4.80 L, what will the new pressure inside the piston be ___________?
What is 1.75 atm?
400
What isotope has 8 protons, 9 neutrons and 7 electrons?
What is Oxygen-17?
400
A drink that needs to be "SHAKEN WELL" before drinking is most likely a:
What is a heterogeneous mixture (suspension)?
400
A silver spoon tarnishing is evidence of __________.
What is a chemical change?
500
A graduated cylinder contains 100 ml of a liquid. The mass of the graduated cylinder with the liquid is 145 grams.The mass of the graduated cylinder when empty is 45 grams. The liquid is most likely ____________
What is water?
500
A sample of argon has a volume of 0.43 mL at 299K. At what temperature in degrees Celsius will it have a volume of 1 mL?
What is 422 degrees Celsius?
500
An atom with 80 protons, 80 electrons, and 120 neutrons would have a mass number of _________?
What is 200 amu?
500
Of: Distilled water, Salt, Soil, Iron and Potassium, __________ is not a pure substance.
What is soil?
500
Dissolving sugar into water is a physical change because ____________
the sugar changes state.
the sugar can be recovered.
the sugar does not change in composition.