Chapter 1
Chapter 2
Chapter 3
CHAPTER 4
CHAPTER 5
100

A substance can be classified by its physical properties, which are properties that 

can be observed without changing into a different substance
100
A substance with a definite shape and a definite volume is a _
solid
100
The atomic number of an element is determined by the number of...
Protons
100
An electron dot diagram shows an atoms amount of
Valence electrons
100
What happens when you try to put a match in liquid nitrogen?
It turns off because the vapor that comes out it turns it off.
200
The law of conservation of mass states that 
mass is not made when a chemical change happens.
200
Rubber is considered a(n) ___ solid because it does not melt at a distinct temperature. 
Amorphous solid
200
The rows in the periodic table are called...
Groups
200
When atoms react, they form a chemical bond, whitch is defined as
A force that holds the atoms together
200
what is a chemical reaction?
an object that can react with many other elements.
300
What is the SI unit of mass
Kilogram
300
Why do liquids and gases take the shape of their containers while solids don't?
Because they are moving so fast that they take the shape and volume. They are also free to move around. 
300
The group that contains that contains elements that are the most reactive is the...
Akali Metals
300
When an atom loses or gains electrons it becomes a
Ion
300
what causes wood to set on fire?
dry wood getting set on fire.
400
The four methods that can be used to separate mixtures are 
Evaporation,Magnetism,flammability,Separating funnel 
400
What happens to the gas particles in an inflated ball when it gets a hole? why?
The gas particles spread out and go as far away from each other as they can, to go o a place where there is low pressure.
400
A radioactive isotope that can be followed through a chemical reaction or industrial process is called a... 
Tracer
400
Magnesium chloride is an example of a ionic compound, which is a compound composed of 
Positive and negative ions
400
What is the definition of a Chemical reaction?

A process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction.

500

What is the relationship between science and technology?

Science and technology are interdependent. Advances in one lead to advances in the other.

500
Earth's atmosphere exerts a force of 124,500 N on a kitchen table with an area of 1.5m2. What is the pressure in pascals?
83,000 pascals
500
Elements that are gases at room temperature are likely to be classified as... 
Nonmetals
500
The metal atoms in iron are held together by
Metallic bonds
500
what does vinegar do to the green stuff on a penny?
it takes it off
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