Anything that occupies space and has mass.
MATTER
In a chemical equation, chemical reaction is represented by what symbol?
An Arrow ---->
When an ice cube turns into liquid water it undergoes what kind of phase change?
MELTING
It is the building block of matter
ATOM
What are the two main parts of a chemical equation?
REACTANTS AND PRODUCT
A combination of two or more pure substances is called?
MIXTURE
In a chemical reaction, if there are 12 sets of H20, how many Hydrogen will there be?
24
When dry ice (solid carbon dioxide) turns into carbon dioxide gas it undergoes what kind of phase change?
SUBLIMATION
The subatomic particle that carries a positive charge is called _______
PROTONS
3N2 + 2H2 = 2NH3 is an example of a balanced equation. TRUE OR FALSE
FALSE
It pertains to the ability of an object to transfer heat and electricity
CONDUCTIVITY
The two substances that undergo chemical reaction is called ________
REACTANTS
It occurs when substances combine or break apart to form new substances with different chemical properties.
CHEMICAL CHANGE
If Boron has 5 protons, 6 neutrons and 3 electrons. What will be its mass?
11
In a chemical equation 4H2 + 2O2 = 4H2O how many hydrogen do you have in your product?
8
It states that the amount of matter can neither be created nor destroyed
LAW OF CONSERVATION OF MASS
If hydrogen atom weighs 110g eacted with 25g of oxygen. How much more oxygen is need if it produced only 100grams of water?
35g
A physical property described as the ability of a matter to be flattened
MALLEABILITY
If Nitrogen has 7 protons, how many electrons does it need for it to become neutral?
7
What coefficients should there be for this chemical equation to be balanced: __H2 + __O2 = ___H2O
2,1,2
He proposed the LAw of Conservation of Mass
ANTOINE LAVOISIER
If sodium atom weighs 250g and it reacted with 125g of chlorine. How much more chlorine is needed to have 400g of NaCl
25g
What are the three major examples of Chemical Properties
Flammability, Reactivity and Combistibility
If Beryllium has 4 protons, 4 neutrons and 2 electrons. What type of ion does it have?
POSITIVE ION
What coefficients should there be for this chemical equation to be balanced: __CH4 + __O2 = ___CO2 + ___H2O
1,2,1,2