Vocabulary
How tightly packed the atoms are in a substance is it's_______
Density
Ella pours herself a glass of soda with ice in it. Identify which objects a solid, liquid, and gas.
The ice is the solid, the soda is the liquid, and the bubbles are the gas
True or False: Ice is less dense than water, so it floats.
True
A measurement that indicates how heavy a person or thing is, depends on the amount of gravity.
Weight
What unit is used to measure mass?
grams (g)
What is melting point?
The temperature when a solid turns into a liquid
Water can be a solid, liquid, or a gas.
What causes the difference between these states of matter?
The amount of energy in the atoms
The temperature of the substance.
The amount of space between the atoms
When an item reaches it freezing point, it changes from _______ to ___________?
a liquid to a solid
the amount of space a substance or object occupies.
Volume
What is known as the universal solvent?
Water
When an item is soluble, what does that mean?
It will dissolve in a solvent
When ice melts, a solid is changed into a liquid. What causes this change?
The molecules have more energy (temperature increases) and spread apart.
If an item is more dense than water, it will ______. If an item is less dense than water, it will _______.
sink; float
What is mass?
the amount of matter in an object
Name an item that is used to measure volume
Beakers, graduated cylinders, and kitchen measuring spoons and cups can be used to measure volume.
When a liquid turns into a gas the temperature of the substance at that point is called
boiling point
What happens when molecules in a substance slow down?
Heat is released.
The atoms come closer together.
The temperature decreases.
The solubility of a substance can be changed by doing which of the following?
Changing it's temperature
Volume of liquids are measured in what type of units?
What force controls weight?
Gravity
anything that occupies space and has mass
Matter
What are the defining characteristics of a solid? Think about shape and volume
A solid has a definite shape and a definite volume.
Name three intensive properties
Name three extensive properties
Measuring density has to do with which two extensive properties?
Mass and Volume