compounds
matter
changes
periodic table
reactions
100
Give the formula for water
What is H2O?
100
The smallest particle of matter is called
What is an atom?
100
After this reaction you still have what you started with
What is a physical change?
100
Give the symbol for hydrogen
What is H?
100
Give the mane of the original ingredients that are combined in a chemical reaction
What are reactants?
200
Give the formula for air
What is O2?
200
The central part of an atom that includes nearly all the atomic mass is called
What is the nucleus?
200
After this reaction the product is totally different from the reactants
What is a chemical change?
200
Give the symbol for copper
What is Cu?
200
The result you get at the end of a chemical reaction or change
What is a product?
300
Give the formula for salt
What is NaCl?
300
The part of the atom that carries a positive charge is called
What is a proton?
300
The substance has changed its state, shape or size
What is a physical change?
300
An element that is found in all living objects
What is C?
300
In this reaction, light, heat, or other forms of energy are released
What is an exothermic reaction?
400
Give the formula for carbon dioxide
What is CO2?
400
There are the same numbers of these particles in an atom
What are protons and electrons?
400
During this change, gas,light,sound and/ or heat are produced
What is a chemical change?
400
What does the number next to the element symbol on the periodic table mean?
What is the atomic number? The number of protons in the atom.
400
In this reaction the substance becomes cooler and you have to add heat
What is an endothermic reaction?
500
Give the formula for sugar
What is C6H12O6?
500
An atom that has only one proton
What is hydrogen?
500
Give the formula for respiration and say what kind of a change it is
What is C6H12O6 + O2 = CO2 + H2O + Energy? It is a Chemical change.
500
Human bodies are made of these elements
What are Carbon, Hydrogen, Oxygen and Nitrogen?
500
The factors that speed up chemical reactions are called... The factors that slow down chemical reactions are called...
What is a a catalyst? What is an inhibitor?
M
e
n
u