If an atom is the smallest part of an element, then a ________________ is the smallest part of a compound.
What is a molecule?
100
Mixtures can be separated ___________.
What is physically?
100
The particles of a solid will move more freely if you increase the ____________ or add heat.
What is temperature?
100
Bubbles and heat indicate a ________ change.
What is chemical?
100
On the periodic table the __________ tells how many protons are in an element's atom.
What is the atomic number?
200
Each element has a unique kind of atom with different numbers of ____________, _____________, and ___________.
What is protons, neutrons, & electrons.
200
Salt water is a type of __________, a special mixture, because the salt dissolves in the water.
What is a solution?
200
Hot air balloons use fire to heat the air so the particles spread out and become less __________.
What is dense?
200
A chemical change produces new ___________ when the atoms are rearranged.
What is compounds or molecules?
200
The difference between the atomic number and the atomic mass is __________.
What is the atomic number is a whole number and the atomic mass is a decimal?
300
When a chemical reaction occurs a new _________ appears.
What is a compound or molecule?
300
Orange juice often says "shake well before using" on the container because it is a ______________.
What is a suspension?
300
When _____________ occurs the water vapor is cooling down so the molecules get closer together and form a liquid.
What is condensation?
300
Conductivity, density, melting, boiling, and tarnishing are all properties of matter, but only _____________ is a chemical property.
What is tarnishing?
300
The __________ are to the left of the zig-zag line and take up most of the periodic table.
What are the metals?
400
In NaHCO3 there are _______ total atoms.
What is six?
400
Chocolate milk is a _____________ mixture because it all looks like one type of substance unlike trail mix where each component is easy to recognize as different.
What is homogeneous?
400
When you add water to make Koolaid, this is a __________ change.
What is a physical change?
400
In the chemical formula for a compound, the ________ is what tells us the number of molecules.
What is the coefficient?
400
The non-metal group that is the most reactive is called the _____________.
What is Halogens or Group 17?
500
According to the _________, the mass of the reactants (the substances you start with) should equal the mass of the products (the substances you end up with).
What is the Law of Conservation of Matter/Mass?
500
Jello is two types of mixtures. When the hot water is added to the powder, the powder dissolves and the jello is a ______________. If you add fruit and then cool the jello in the refrigerator the jello and fruit stay mixed like in a ____________.
What is a solution and a colloid?
500
True or False. Mass is affected by changes in location or shape?
What is False! If I smash playdoh I still have the same amount! If I go to the moon I am still made of the same amount of matter!
500
In H2O the two is known as a ____________ which tells you how many atoms of _________ you have.
What is subscript and Hydrogen?
500
The non-metal group that is the LEAST reactive is the ____________.