Physical and Chemical Change
States of Matter
Phase Changes
Atomic Structure
Periodic Table
Periodic Table 2
Metals, Nonmetals, Metalloids
100
A change in one or more physical properties of matter without any change in chemical properties is called a ______________ change.
physical
100
What state of matter has a definite shape and a definite volume?
A solid
100
In what phase change does matter change from a liquid to a solid as its particles lose energy until eventually the particle vibrate in a fixed position and are crowded closely together?
Freezing
100
Name the three parts of an atom and give their charges.
Protons have a positive charge.
Electrons have a negative charge.
Neutrons have no charge.
100
What do we call the rows on the periodic table?
Periods
100
The modern periodic table is organized according to increasing __________ __________.
atomic number
100
What is to indicate where the metalloids are located?
The "staircase"
200
____________ is defined as anything that has mass or volume.
Matter
200
What state of matter has a definite volume and takes the shape of its container?
A liquid
200
When melting occurs, are the particles gaining or losing energy?
When melting occurs, the particles are gaining energy. They absorb enough energy to partly overcome the force of attraction holding them together. This allows them to moveout of their fixed positions and slip over each other.
200
The center part of an atom that contains 2 of the 3 subatomic particles is called the atom’s __________.
nucleus
200
What do we call the columns on the periodic table?
Groups or Families
200
The elements in the same group or column have similar ____________ properties.
Physical
200
Most metals are __________, Which means that they can be flattened with a hammer without shattering
Malleable
300
What do we call the ability of matter to burn (catch on fire)?
Flammability
300
What state of matter has no definite shape and no definite volume?
A gas
300
What is the process in which a solid changes directly to a gas without going through the liquid state?
Sublimation
300
Describe each part of an atom in terms of its location.
Protons and neutrons make up the nucleus, while electrons move around the nucleus in the energy levels
300
What are the three categories of elements on the periodic table?
The three major categories on the periodic table are the metals, nonmetals and metalloids.
300
What’s the difference between groups and periods on the periodic table?
Groups are the vertical columns while periods are the horizontal rows.
300
Describe the outer level of electrons for a metal element in group 2
They have 2 valence electrons
400
Is the following an example of a physical or chemical change? Explain why.
Ice Cube ---> Puddle of Water
Physical Change because its just a phase change
400
What state of matter will have HIGH DENSITY because there is less air between their particles?
Solid
400
What is the process in which a liquid changes to a gas (boiling)?
Evaporation
400
What do we call the electrons in the outermost energy shell?
Valence electrons
400
What are the first two groups on the periodic table called?
Alkali and alkaline earth
400
What is the name of the element found in Group 17, Period 3? Also, what is its atomic number, chemical symbol, and average atomic mass?
Bromine, 35 (atomic #), Br (symbol), and 79 atomic mass units
400
What 2 groups are the most reactive metals found?
Alkali and Alkaline-earth metals: Groups 1 and 2
500
What is the law of conservation of mass?
500
Describe solids, liquids, and gases in terms of the distance between their particles.
From solids to gases, the particles move further apart.
500
What is the process in which a gas changes to a solid
without going through the liquid state?
Deposition
500
What must happen for an electron to jump to a different energy level?
The energy level must be full
500
What are the last two groups on the periodic table?
Halogens and noble gases
500
What piece of information on the periodic table determines the identity of any atom? What does this bit of information tell you about the atoms of that element?
Atomic number-
tells you the number of protons in the nucleus of the atom of any element
500
Which of the three major categories of Elements has a half complete set of electrons?
Metalloids