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The Energy Effect
What's the Matter?
Pondering the Periodic Table
Atoms
100
When two or more substances come together or break apart to form new substances, this is what kind of change?
What is a chemical change?
100
The faster molecules move, the _______________ it is for them to resist their mutual attraction. a. harder b. easier
What is easier?
100
Matter changes whenever this is added or taken away.
What is energy?
100
Elements in the periodic table are listed by their _____?
What is their atomic number?
100
Atoms are the smallest unit of ______________.
What is an element?
200
Another term for chemical change(s) is...?
What is chemical reaction(s)?
200
The temperature at which a liquid becomes a gas is called its....?
What is it's boiling point?
200
The particle arrangement of a substance spreads out when it is...?
What is heated?
200
The atomic number of an element is located where in its box on the Periodic Table?
What is above the element's symbol?
200
The atomic number of an element is also the number off ___________ that element has.
What is protons?
300
Toasting bread is an example of this type of change.
What is chemical?
300
Water needs to reach 100 degrees Celsius in order to ___________? a. achieve vaporization b. evaporate c. a and b
What is achieve vaporization.
300
What are the two types of vaporization?
What are evaporation and boiling?
300
Reading the Periodic Table left to right, those sets are called what?
What are periods?
300
What is the nucleus made up of?
What are protons and neutrons?
400
Melting chocolate is an example of this type of change.
What is physical?
400
The specific temperature in which a substance turns from a solid to a liquid is called its....?
What is melting point?
400
When water forms on the outside of a cold soda can, this is called...?
What is condensation?
400
What are the vertical columns called?
What are groups?
400
What is another word for electron shell?
What is orbital?
500
Adding sugar to water is considered what kind of change?
What is physical?
500
When substances move so slowly that they begin to form regular patterns, this is called....?
What is freezing?
500
The name for the property of liquid that describes its resistance to flowing.
What is viscosity?
500
What do periods describe in the Periodic Table?
What is the number of electron shells an element has?
500
What are atoms with the same number of protons but a different number of neutrons called?
What are isotopes?