Atoms
These particles in an atom have a positive charge
What is a proton?
The abbreviation for each element is called the
What is the atomic symbol?
Distilled water is this number on the pH scale.
What is 7?
Physical changes are when an ice cream cone ___________ or a soda can is _____________
what is melts and crushed?
In a mixture of chocolate milk, what is the solvent?
What is milk?
The smallest unit of matter
What is an atom?
The periodic table is an organization of
What are elements?
Red litmus paper indicates the presence of
What is an acid?
this reaction creates a new substance
what is chemical reaction?
(true/false)
These are all ways you can separate a mixture:
blend, distillation, sort, bake, filter, centrifuge
What is false?
In 1661, he published a theory that all matter was made of atoms.
Who was Robert Boyle?
As you go left to right aross a period, the atomic mass
What is increases?
We typically use (acids OR bases) to clean with?
(yes, pick the work ACID or BASE)
What are bases?
(true/false) One way you can tell there may have been a chemical change is when a strong smell is given off
what is true?
This type of change occurs when you dissolve the solute in the solvent
What is physical?
How much an atom weighs is called the:
What is atomic mass?
The very stable elements on the far right of the periodic table are the
What are noble gases?
This acid is found in the human stomach
what is hydrochloric acid?
This type of chemical reaction breaks a substance apart to make two new substances
what is decomposition
When you have dissolved as much solute as possible, you can you say this about the solution
What is saturated?
This force keeps atoms from flying apart
What is electromagnetic force?
Each column in the periodic table is called a ___________ AND each elements in these columns have the same number of ____________________ .
(must be specific!)
What is groups AND electrons in the outer orbit/shell/valance
In acids, there is a high concentration of _____________ and in bases, there is a high concentration of __________________
what is hydrogen ions (acids) and hydroxide ions (bases)
This type of chemical reaction brings two substances together to make a new substance
what is synthesis?
Saltwater is a ________________________ solution and it will _____________________ over time as it sits.
what is homogenous and will not settle