2.A: Mixtures
2.B: The Chemical Formula
2.C: One in a Million
2.D: Density, etc.
Vocabulary
100
When two or more substances are combined by physical means, this is formed.
What is a mixture?
100
This is the weight of all the atoms represented in the chemical formula added together is called _____.
What is the formula mass?
100
Mass is an example of a/an ______ property?
What is a *physical* property?
100
List 3 examples of physical properties.
What are mass, height, width, color, volume, malleability, reflectivity, temperature, density, phase, or brittleness?
100
A substance's ability to dissolve is referred to as its _______.
What is solubility?
200
This is a kind of matter that can't be separated by physical means.
What is a substance?
200
This is the way to represent the ratio of the atoms of different elements in a compound.
What is a chemical formula?
200
How many cubic centimeters are in 1mL?
What is one?
200
The measure of how much mass is in a given volume of a material.
What is density?
200
When a substance dissolves in a solvent it is said to be this.
What is soluble?
300
This is a substance that cannot be broken down to a simpler substance, and one in which all the atoms have the same atomic number.
What is an element?
300
This is a mixture of two or more different elements.
What is a compound?
300
Give an example of a chemical change that you observe in your daily life.
What is cooking, burning, rusting, corroding, or digestion?
300
If I want to precisely measure an amount of water, I will use this instrument.
What is a graduated cylinder?
300
When Na+ and Cl- are attracted to each other by their opposing charges, they form this.
What is an ionic compound?
400
This is a type of change that transforms one substance into another.
What is a chemical change?
400
This is one way to show how all of the atoms in a compound are connected to one another.
What is a structural diagram?
400
What kind of change is a burning match?
What is a chemical change?
400
When mixing 1 teaspoon of salt (NaCl) with 2 cups of water; ______ is the solvent, while ______ is the solute.
What is water (solvent) and NaCl (solute)?
400
When a substance doesn't dissolve in a solvent, it is said to be this.
What is insoluble?
500
The number which represents how many protons are in the nucleus of an element.
What is the atomic number?
500
In a chemical substance, such as water, the single smallest unit is referred to as a/an ___________.
What is a molecule?
500
What kind of change is an ice cube melting?
What is a physical change?
500
This is an example of a physical change that you can observe in your daily life.
What is melting, freezing, boiling, condensation, dissolving, bending, evaporation, heating, or cooling?
500
The amount of bonds a Carbon atom can make.
What is four?
M
e
n
u