Vocabulary
Reading Molecules
Phase Changes
States of Matter
Miscellaneous
100
When temperature decreases, it gets ______________.
Hotter or colder?
Colder
100
What is the name of the chart that shows information about all of the elements scientists have discovered?
The Periodic Table of Elements
100
What is an example of a phase change?
Melting, Freezing, Evaporation, Condensation
100
What are the 3 basic states of matter?
Solid, Liquid, Gas
100
Is gold (Au) an element or a compound?
Element
200
What term describes a pure substance made of only one type of atom?
Element
200
How many elements are in NO?
2- Nitrogen (N), Oxygen (O)
200
To go from liquid to gas, does heat increase or decrease?
Increase
200
Does this show a solid, liquid, or gas?
Gas
200
Are silver (Ag) and gold (Au) made of the same kinds of atoms or different kinds of atoms?
Different!
They are different elements.
300
What is the smallest particle of an element that still retains the chemical properties of that element?
Atom
300
How are oxygen gas (O2) and ozone gas (O3) SIMILAR?
They are made of the same element (oxygen)
300
When matter gains thermal energy, what happens to the motion of particles?
Speed increases (move faster)
300
Describe the motion of particles in a solid
Vibrate in place
300
Thermal energy is also called ____________ energy.
Heat
400
In which state of matter do particles have the most kinetic energy?
Solid, liquid, or gas?
Gas
400
How many carbon atoms are in CO2?
1 Carbon atom
(2 oxygen atoms)
400
If a gas condenses (turns to a liquid), what happens to the spacing of the particles?
They get closer together.
400
The molecules of a liquid are spaced ________________ than the molecules of a gas.
(closer together or farther apart)
Closer together
400
If a liquid's thermal energy decreases enough, it can turn into a ________________.
Solid
500
Which of the following are compounds?
H2
O2
H2O
CO
CO2
H2O, CO, CO2
500
How many total atoms are in H2O (water)?
3
500
When matter changes from a solid to a liquid, what happens to the kinetic energy of the particles?
Increases
500
What state of matter has a definite shape, mass and volume?
solid
500
How many molecules are in this picture?
1
It has 7 atoms.