states of matter
What substance has definite shape and volume with particles tightly packed and vibrating in place.
A solid
Who invented the periodic table of elements.
Dimitri Mendeleev.
What is matter is matter made of
Atoms
What element has the symbol O
Oxygen
What is a compound
A substance formed when two or more different chemical elements are chemically bonded together. For example (H2O)
What is the process of a gas changing directly into a solid without becoming a liquid first.
Deposition
What is a period.
Periods are the horizontal rows
A student has two samples of pure iron. Both samples are malleable and ductile. Why are both samples similarly malleable and ductile.
They are composed of the same type of atoms
What element has the symbol C
Carbon
What is the compound of water.
H2O
The process of a liquid changing directly into a solid.
Freezing
What are the main categories of the table.
The three main categories are metals, nonmetals, and metalloids
The state of matter can change through processes.
An phase change.
What element has the symbol He
Helium
What is the compound for table salt
NaCl
What substance has definite volume but takes the shape of the container. Particles can slide past each other.
Liquid
What are the vertical columns in the periodic table
A group or families
Matter cannot be created or destroyed, only changed from on form to another.
The law of conservation of matter.
Which statement is true about atoms and elements.
Atoms of the same element are alike.
What is the compound for hydrogen peroxide
H2O2
True or false. Solids will expand to fill their container
False because solids have a definite shape and volume and do not expand to fill their container
The periodic table we use today has the elements arranged according to their
Increasing atomic number
In a closed system , total amount of matter remains constant over time.
Matter is conserved.
How many elements are liquid at room temperature.
There are 2 elements.
What is the compound of gulcose .
C6H12O6