SCIENCE 4
SCIENCE 3
SCIENCE 2
SCIENCE 1
100
What happens if you break a magnet in half?
it gets new north and south poles
100
As the distance between two magnetic poles decreases, the magnetic force
increases
100
Which state of matter changes volume the easiest?
gas
100
a positive and negative charge will _____________ each other.
attract
200
Fireworks exploding in the sky and giving off light are an example of a(n)
exothermic reaction
200
What force is produced by the iron bar shown in the diagram
magnetic force
200
if energy is removed from a substance in the gas state, the substance will start to
Freeze
200
___________ bonds hold atoms together in a molecule?
chemical
300
The buildup of charge on an object is called __________ electricity.
static
300
The number telling how many atoms are in a molecule or the ratio of elements in a compound is called a
subscript
300
What is vaporization?
A liquid becoming a gas
300
Describe the arrangement of the atoms in the solid state.
The particles are packed together and particles ar not moving
400
What happens when chemical bonds break and new bonds form?
new bonds form and new substances form
400
Uses symbols, numbers and formulas instead of words to represent a chemical reaction is call a chemical
chemical equation
400
Positive and negative charge _______________ each other.
attract each other
400
PHYsical change
same properties and no new bronds formed
500
Which elements are considered to be ferromagnetic?
Fe, Co, N
500
The total mass of the reactants is equal to the total mass of the products.
This is call the Conservation of mass
500
A __________ object contains equal numbers of protons and electrons.
neutral
500
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