Describing Matter
Measuring Matter
Changes in Matter
Energy and Matter
Howdy Doody
States
100
Table sugar and salt are examples of
Pure substances
100
The measurement of the force of gravity on an object is the object's
weight
100
Dissolving salt in water is an example of a _________ change.
What is a physical chang?
100
The energy of matter in motion is called
Kinetic Energy
100
What holds atoms together in a molecule?
chemical bonds
100
Create a model to show atoms of solid bromine, liquid bromine, and gaseous bromine. How should her three models differ?
The motion of the atoms should vary depending on the state.
200
Substances that cannot be broken down chemically into other substances
Elements
200
The measurement of how much matter an object contains is its
mass
200
One example of a chemical change is
burning wood
200
radio waves, visible light from the sun, infrared "rays" from heat lamps, the waves that heat food in a microwave oven, ultraviolet rays, and X-rays, are all considered types of
electromagnetic energy
200
Fireworks exploding in the sky and giving off light are an example of a(n)
exothermic change
200
will take both the volume and shape of the container that holds it?
A Gas
300
All elements are composed of extremely small particles called
Atoms
300
the measurement of how much mass is contained in a given volume is called
density
300
What is the ability to do work or cause change
energy
300
How would a chemical property of a sheet of paper be created?
when it is burned.
300
a physical property that does not change when the size of the sample changes
density
300
If you were to model the water particles before and after deposition, how would they compare?
Before deposition, the particles move quickly in all directions; after deposition, they vibrate in place.
400
True or false? Atoms of different elements are the same.
false
400
The volume of an irregular object can be measured by
Submerging the object in water in a graduated cylinder
400
the change in which ice absorbs energy and melts is a(n)
endothermic change
400
During photosynthesis, plants transform electromagnetic energy from the sun into
chemical energy
400
Visible light is one example or _________ energy, a form of energy that travels through space as waves
electromagnetic
400
Why does water that is frozen in an ice cube tray stay in the shape of a cube?
Water particles stay locked in place.
500
A(n) __________ is formed when two or more substances are so evenly mixed that you can't see the different parts.
homogeneous mixture
500
The object reacts with an acid to form water is an example of this property.
chemical
500
_____________ energy, the total energy of all particles in an object, always flows from warmer matter to cooler matter
Thermal
500
Assume that each object is made of the same metal.
Which of these physical properties is not similar in all four of these objects?
mass
500
This is not an example of a chemical change.
Salt dissolving in a glass of water
500
.
The particles are moving in all 3.
600
Maple syrup is this type of mixture.
Homogeneous
600
Brass is classified as a _________.
Solution.
600
This is made up of one type of atom.
Element
600
Reactant A and reactant B undergo a chemical reaction to form product C.
What type of substance is product C?
A compound.
600
Ammonia is made up of 2 or more different types of atoms, therefore, it is a __________________.
A compound.
600
Compare the particles of a solid, liquid & a gas.
Gas - move freely
Liquid - Slide past each other
Solid - vibrate in place