I have a theory on branches...
This is a possible explanation of an event that has not yet been tested.
What is a hypothesis?
This is a single type of matter and includes elements and compounds.
What is a pure substance?
Matter in this phase are rigid and have a definite shape and volume
What is a solid?
This is a property of matter that can be observed without changing the substance.
What is a physical property?
These are substances on the left of a chemical reaction. They are the substances you start with.
A chemist that is analyzing the crystal structure of non-carbon compounds would be working in this field of chemistry.
What is inorganic chemistry?
This is made of two or more substances, and it has two or more phases (you can see each individual substance).
What is a heterogeneous mixture?
This phase of matter is easily compressed.
What is a gas?
When a substance changes color or temperature, it could be a sign of this occurring.
What is a chemical change?
These are the substances that are formed during a chemical reaction.
This states something that happens without attempting to explain it.
What is a law?
These substances cannot be broken down chemically into simpler substances, and they all appear on the periodic table.
What is an element?
Matter in this phase takes the shape of its container, but it has a definite volume.
What is a liquid?
Examples of this would include a substances flammability and reactivity with oxygen.
What are chemical properties?
This is the product of the reaction that occurs when iron reacts with oxygen to form rust.
What is rust?
This branch of chemistry involves studying the speed of chemical reactions, a molecule's physical properties, or anything else involving the behavior of chemicals.
This substance is made of two or more elements bonded together. It can be chemically broken down into its elements.
What is a compound?
Matter in this phase can expand to fill any container.
What is a gas?
Dissolving salt in water would be an example of this kind of change.
What is a physical change?
This states that mass is neither created nor destroyed in a chemical reaction.
What is the law of conservation of mass?
A chemist studying lipids (which are made of chains of carbon) in a cell membrane would be practicing BOTH of these fields of chemistry.
What are organic chemistry and biochemistry?
These TWO terms both refer to a type of mixture with a single phase (you can't see the individual parts of the mixture).
This is a sign of a chemical change occurring that can be seen when zinc is placed in acid and begins to bubble.
What is the formation of a gas?
This question is describing TWO physical properties of sugar.
What is a white color/a solid/solubility in water/density/etc.?
This is the chemical formula of magnesium oxide.
What is MgO?