Chemistry
The first step in the Scientific Method is Asking a question or ____________ a problem.
What is Identifying?
Density is calculated by mass over this.
What is a Volume.
Flammability is this type of property of matter.
What is a chemical property?
A fundamental difference between a Physical change and a Chemical change is that Physical change is ____________________.
What is Reversible. The form of the substance changes, but its identity remains intact.
This is a substance with a definite composition.
What is a Chemical?
Heterogeneous mixtures use unlike substances and tend to be easier to _______.
What is Separate?
This is how synthetic chemicals are made.
What is by humans / people / scientists?
Elements and Compounds are under this category of Matter.
What is Pure Substances?
This is necessary in order to observe a chemical's properties.
What is a Chemical Reaction?
Baking a cake involves this type of change.
What is chemical change?
This is the Density of an object with a mass of 16 grams and a volume of 4 cm3.
What is a 4 g/cm3?
O2 and H2 are naturally occurring _______.
What is elements?
A sheet of paper can be used to demonstrate a physical reaction and a chemical reaction by doing these two things.
What is tearing the paper to demonstrate physical change and burning the paper to demonstrate chemical change.
This element increases the density of the Dead Sea helping people to float effortlessly on its surface.
What is salt?
Water molecules will get closer together when the temperature does this.
What is decreases / gets colder?