2.1
The Nucleus of an atom is made of what atomic particles
Protons and Neutrons
The does adhesion of a water molecule mean?
a water molecule sticking to a different substance or material
What are the organic compounds necessary for life?
carbs, lipids, proteins, Nucleic Acids
The ingredients that go into a chemical reactions are called
the reactants
Covalent bonds of formed when atoms _________ electrons
Share
What elements make up a water molecule
2 hydrogen and 1 oxygen
Which organic compounds are the main source of energy for living things? carbs, lipids, proteins or nucleic acids
CARBS
The end result of a chemical reaction is called
the product
Name the 3 particles that make up an atom
protons, neutrons, electrons
What is cohesion of a water molecule?
When water molecules stick to other water molecules
What elements are carbohydrates made up of ?
Carbon, Hydrogen, Oxygen
TRUE OR FALSE: Is a chemical reaction a process that changes one set of chemicals to another?
TRUE
What are the two types of bonds atoms can make
covalent and ionic
What makes a water molecule polar
the uneven distribution of electrons
Give an example of a lipid and a protein
Lipid- fat, butter, oil
Protein- Meat, beans, nuts
Chemical reactions that absorb more energy than they release are called: They become cooler to touch
Endothermic
What is the difference between a compound and an element
A compound consists of 2 or more elements- an element is made of one atom that cannot be broken down into other substances
Which solution has the highest H+ concentration: pH 1 or pH of 14
What is the function of Protein and nucleic acids
Proteins_ help to fight disease, control the rate of reactions and regulate cell process, used to form bones and muscles
Nucleic Acids- blueprint of life, store and transmit heredity
What does a catalyst do?
It speeds up the rate of the chemical reaction