Chemistry 1
A snack mix is an example of this.
What is a mixture?
When two or more atoms are joined together chemically
What is Molecule
The number that we use to balance a chemical equation.
What is a coefficient?
Color, luster, odor
What are physical properties?
Special type of animal based polymer frequently used in cooking to make marshmellows, puddings, and gummies!
What is collagen or gelatin?
This type of mixture looks uniform throughout. Saltwater is a good example.
What is a homogenous mixture?
A substance formed by chemically combining two or more atoms of different elements is known as
What is Compound
What is H2O
Water
Giving off heat or light is a clue that this type of a change is occuring.
What is a chemical change?
Water is made of these two elements?
What is hydrogen and oxygen?
What term refers to anything that occupies space, physical and chemical properties and exists in gas, liquid or solid form
What is Matter
All matter exists in four forms solid, liquid, plasma and
What is gas
Matter can not be created nor destroyed
What is the Law of Conservation of Mass?
There are this number of elements on the periodic table of the elements.
What is 118?
The subscript in a chemical formula represent this.
What is the number of atoms of each element?
Elements represent unique forms of these little thingies. The building blocks of everything!
What are atoms.
When one chemical changes its state of matter, the change is called
What is Physical Change
The atomic number tells us this.
What is the number of protons?
Coffee would be an example of this type of mixture
What is homogenous?
Balance the equation Fe+O2→FeO3
What is 2Fe+3O2→2FeO3
This is the smallest type of atom.
What is Hydrogen.
What type of change occurs when ice melts to water
What is Physical
This is made when salt is dissolved in water
What is Solution
an atom of an element has 15 protons, 15 electrons and 16 neutrons has an atomic mass of
What is 31
Balance the equation Na+Cl2→NaCl
What is 2Na+Cl2→2NaCl?
Atoms bond together to form these.
What are molecules?
Balance the equation H2+Cl2→HCl
What is H2+Cl2→2HCl?
2H2+O2=2H2O
What is balanced equation for water
6.022x1023
What is a mole?
Balance the equation C3H8+O2→CO2+H2O
What is C3H8+5O2 → 3CO2+4H2O?