Key Terms
Equations
Atoms
Thermal Energy and Matter
Mixtures
100
The study of properties and how matter changes.
What is Chemistry?
100
The length of a brick is 2 meters, the width is 6 meters, and the height is 3 meters, what is the volume?
What is 36 meters cubed?
100
The basic particle from which all elements are made.
What is an atom?
100
Every chemical or physical change in matter includes a change in ______.
What is energy?
100
Made of two or more substances not chemically combined
What is a mixture?
200
The basic particle from which all elements are made.
What is an atom?
200
A small block floats in water. The mass is 12 g and the volume is 144 cm cubed. What is the density?
What is .083 grams/cm cubed?
200
Why do different elements have different properties?
Because their atoms are different.
200
When matter changes the most common form of energy released or absorbed is _______.
What is thermal energy?
200
In a ________ mixture you can see the parts. For example a salad or damp soil.
What is heterogeneous?
300
A pure substance made of two or more elements chemically combined in a set ratio.
What is a compound?
300
The mass of and object is 6g and the volume is 18cm, what is the density?
What is 0.33g/cm cubed?
300
A group of two or more elements held together by a chemical bond.
What is a molecule?
300
A chemical change that releases energy in the form of heat and light.
What is combustion?
300
A mixture so evenly mixed that you can't see the seperate parts. For example, sugar water.
What is homogeneous mixture?
400
The fact that matter is not created or destroyed in any chemical or physical change.
What is the law of conservation of mass?
400
The length of an item is 26 cm, the width is 2 cm, and the height is 4 cm. What is the volume?
What is 208 cm cubed?
400
Experiments have showed that atoms are made of even smaller _____.
Parts
400
Thermal energy always flows from ______ to ________.
What is warmer matter to cooler matter?
400
A mixture is usally easy to seperate because each _______ keeps its own properties.
What is compound?
500
The total energy of all the particles of matter
What is thermal energy?
500
The length of an object is 96 in, the width is 14 in, and the height is 2 in. What is the volume?
What is 2688 in cubed?
500
The force of attraction between two atoms.
What is a chemical bond?
500
Particles of gas in _______ have a greater average of energy of motion then particles in ________
What is warmth/cool air
500
The parts of a mixture are not combined in a ____ _____.
What is set ratio?
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