Which of the following is a Chemical change?
A.) Souring milk
B.) Water evaporates from the surface of the ocean
C.) Paper is cut in half
D.) Butter melts on warm toast
A.) Souring milk
100
Solid, liquid, and gas
What are the three states of matter?
100
protons and neutrons
What is in the nucleus?
100
Is sand a compound or mixture?
mixture
100
Hydrogen is the first
What is the first element on the periodic table?
200
a change affecting the form of a chemical substance, but not its chemical composition.
What is a physical change?
200
Is jello a colloid or a solid?
A colloid
200
How many electrons can the third shell hold?
18 electrons
200
a thing that is composed of two or more separate elements
What is a compound?
200
The periodic table is organized by this
What are metals and non-metals
300
A bike rusting is an example of
What is a Chemical change?
300
Has slow-moving particles and takes the shape of its container
What is a liquid
300
It is in the center of the atom
What is the nucleus?
300
H2O is what
What is a compound?
300
neon is a metal or non-metal
What is a non-metal?
400
What change is when two substances combine and the temperature goes down 5 degrees?
What is chemical change?
400
lightning is this called fourth state of Matter
What is plasma?
400
How many electrons can the fourth shell hold?
What are 28 electrons?
400
a substance made by mixing other substances together
What is a mixture?
400
This is the number in the top left corner
What is an atomic number?
500
true or false- Unexpected color change is an example of a chemical change
What is true?
500
What is it called when a gas turns into a solid without turning into a liquid?
What is deposition?
500
This is the other name for electron shells
What is electron orbit?
500
The periodic table is a table of what?
What is elements?
500
The periodic table is sorted into what three states of matter at room temperature?