Vocabulary
The smallest unit of an element that maintains the properties of that element.
What is an atom?
Dissolving salt into water is an example of what kind of change?
What is physical change?
The formula for calculating density is....
What is
D = M/V
A rapid change from a liquid to a gas or vapor.
What is boiling?
This is a symbol for oxygen (O2). What is the 2 called?
What is a subscript?
An __________ is made up of one or more of the same kind of atom chemically combined.
What is an element?
Using electricity to breakdown water into hydrogen and oxygen molecules is an example of this kind of change.
What is chemical?
The formula to calculate find volume given the density and mass are known is....
V = M/D
Name the four states of matter.
What is solid, liquid, gas and plasma?
True or False
Every alloy is combined with at least one metal.
What is true?
A substance that has definite physical and chemical properties such as appearance, melting point and reactivity.
What is pure substance?
Keeping in mind that we have been studying Mixtures and Pure Substances, KoolAid is a combined with many particles yet; it is not chemically combined. KoolAid would be classified as a ____________.
What is a mixture?
How is the volume of an irregular shape measured?
Submerging the object in water in a graduated cylinder.
In this state, particles spread apart and fill all the space available to them.
What is gas?
A __________ is a group of two or more atoms that are held together by chemical bonds.
What is a molecule?
A mixture that does not have a uniformed composition.
What is heterogenous?
True or False: A pure substance is made of only one kind of matter that has definite properties.
What is True?
What piece of laboratory equipment would you use to identify the mass of an object?
What is a triple-beam balance.
The amount of the snow on the ground may decrease even if the temperature stays below the freezing point. What is the process that best explains this event?
What is condensation?
This was the most difficult class that Mrs. Solan took in college. What is it?
What is Organic Chemistry?
The change from a solid state directly into a gas.
What is sublimation?
The fact that matter is not created or destroyed in any chemical or physical change is called the ________________________.
What is the Law of the Conservation of Mass?
From your knowledge obtained in the observational labs, which would have more density; Iron or Mercury?
What is Mercury? Mercury is the denser of the two elements. Iron's density is 7.874 g/cm3 and Mercury is 13.57 g/cm3.
Water is polar and oil is non-polar. What happens when they are combined into the same container?
What is they do not mix?
When testing the Ph of acids, the blue litmus paper turns to this color.
What is red?