Elements, Mixtures and compounds
The smallest unit of matter which has properties of a chemical element.
What is an atom?
These are the ingredients of a reaction; they are on the left side of the arrow.
What are reactants?
Matter can neither be _____________ nor ______________.
What is created, destroyed OR made, lost.
This tells the number of protons in an atom.
What is the atomic number?
Coca-Cola was oringinally this color.
What is Green?
For something to be a compound, a _____ _______ needs to occur.
What is a chemical reaction?
A process that involves the rearrangement of atoms to form new substances.
What is a chemical reaction?
In a ____________ system, all the matter stays inside.
What is closed?
Anything that has mass and takes up space is a kind of
What is matter?
What color did oranges used to be?
What is Green?
Hydrogen and Neon are examples of what state of matter at room temperature.
What is a gas?
The symbolic representation of a chemical reaction using symbols and chemical formulas.
What is a chemical equation?
List at least 3 indicators of a chemical change.
What are color change, gas is produced (smell or bubbles or fizz), a solid is formed, bright light or temperature change, etc.
These cannot be broken down into simpler substances; everything around us is made up of combinations of them.
What are elements or atoms?
On average we spend __________ of our lives on a toilet.
What is 1 year?
Soil and air are examples of what type of material.
What are mixtures?
This kind of reaction absorbs energy. (Heat enters.)
What is endothermic?
The amount of matter stays the same in the reactants and products for ____________ chemical reactions.
What is all or every.
The study of matter and how it changes is called
What is chemistry?
Snakes can predict _____________.
What is an Earthquake?
How could you isolate salt from sea water?
What is heat it, boil it or let it evaporate. (Any one of these are correct!)
Every chemical reaction involves a change in
What is bonds, energy, etc.?
A 10 gram sample of iron reacts with oxygen to form 18.2 grams of ferric oxide. How many grams of oxygen reacted?
What is 8.2 grams?
The smallest unit of a compound is called
What is a molecule?
What is the only animal that can't jump?
What is an Elephant?