General Chemistry
What is chemistry?
Chemistry is the study of matter.
What is the most basic unit of matter known as?
The most basic unit of matter is known as an, "Atom."
What are the 2 major properties of matter?
Chemical and Physical Properties
What happens if I put an object with a density greater than 1 g/cm3 into water?
It will sink!
Thermal energy is the ______________________ of all of the particles in an object combined
Kinetic Energy
What is a chemical?
A chemical is any substance with a definite composition
What do we call a pure substance that cannot be broken down any further?
A pure substance that cannot be broken down any further is an "Element."
Which type of major property can be defined as any characteristic that can only be observed when a substance undergoes a chemical change?
The type of major property that can be defined as any characteristic that can only be view when a substance undergoes a chemical change is a CHEMICAL PROPERTY
What are the two major types of mixtures?
The two major types of mixtures are heterogeneous and homogeneous mixtures.
The _________ that particles move and collide the ____________ the thermal energy
Slower-Lower or Faster-Greater!
How does someone use the Density Triangle to solve a problem?
Cover up the variable you WANT. Use position of remaining variables in triangle to solve!
Please complete the following statement:
All _______ are _______, but not all ______ are ________
All compounds are molecules, but not all molecules are compounds.
What is the major type of property that can be defined as any characteristic that can be measured without changing the chemical makeup of a substance?
The major type of property that can be defined as any characteristic that can be measured without changing the chemical makeup of a substance is a PHYSICAL PROPERTY.
What is one similarity between gases and plasmas?
When two objects with different temperatures touch, where does the energy want to flow?
From the warmer object to the cooler object
Name a piece of lab equipment that has a HIGH degree of precision.
Graduated Cylinder and/or Volumetric Flask
What is compound?
A compound is any combination of two or more atoms of DIFFERENT elements.
Luster, Density, Melting Point, and Color are all considered to be _____________ Properties
Physical!
What is the difference between a pure substance and a mixture?
A pure substance is any substance that cannot be broken down further by physical means (such as elements and compounds)
A mixture is any substance that can be physically separated and or broken down (their constituents are not combined chemically).
Define "Heat"
Heat is thermal energy in transit between substances at different temperatures.
What is the definition of matter, mass, and volume.
Matter is defined as anything that takes up space and has a mass.
Mass is the measurement of how much matter is in an object.
Volume is the amount of 3-dimensional space that an object takes up.
What is the difference between a molecule and a compound?
The difference between a molecule and a compound is:
A molecule is any combination of two or more atoms. A compound is the combination of two or more atoms of DIFFERENT elements.
Name 2 types of physical changes that have not already been said as part of this game.
Shredding, ripping, smooshing, evaporating, melting, smashing, mixing, etc...
Please explain the difference between homogeneous and heterogeneous mixtures.
Homogeneous mixtures look the same throughout
Heterogeneous mixtures have clearly different parts in them.
Why does the Kelvin Temperature Scale not have any negative numbers. Be specific!
The Kelvin scale is an absolute scale, since it goes all the way down to absolute zero. Temperatures cannot go any lower than absolute zero, so there are no negative values.