TEKS 8.6A
TEKS 8.6C
TEKS 8.6D
TEKS 8.6B
TEKS 8.6E
100
An _________ is a substance that cannot be broken down into another substance.
What is an ELEMENT
100
Water molecules attract each other because of _________.
What is COHESION
100
A pH value lower than 7 indicates a substance is an _______
What is an ACID
100
2C8H18 + 25O2 --> 16CO2 + 18H2O
How many different elements are involved in this combustion reaction?
What is 3
100
In a chemical reaction, the total number of atoms for each element remains the ___________ before and after the reaction.
What is the SAME
200
A _______ is a substance made of ____ or more different elements that are bonded together.
What is a COMPOUND and TWO
200
The strength of the thin film at the surface is called _____________.
What is SURFACE TENSION
200
A pH value higher than 7 indicates a substance is an _______,
What is BASIC
200
4FeS2 + 15O2 + 14H2O → 4Fe(OH)3 + 8H2SO4
How many molecules of water are present in the chemical reaction above?
What is 14
200
During a chemical reaction, atoms are ___________ , but they are not created or ___________ .
What is REARRANGED and DESTROYED
300
In an homogeneous mixture, substances are _______ distributed throughout.
What is evenly(uniform)
300
Water molecules are attracted to other materials _______
What is ADHESION
300
Pure water is considered _______, with a pH of ___.
What is NEUTRAL and 7
300
CaCO3+2HCl→CaCl2+H2O+CO2
Which elements are present in the chemical equation?
What is Calcium, Carbon, Oxygen, Hydrogen, Chlorine
300
What side of the Yield Sign (arrow in a chemical equation) represents PRODUCTS and REACTANTS?
What is PRODUCTS on the RIGHT and REACTANTS on the LEFT
400
In a heterogenous mixture, substances are _______ and can be easily separated.
What is DIFFERENT
400
Water moves upward through narrow spaces or materials, like the stem of a plant or a paper towel
What is CAPILLARY ACTION
400
What is the pH of pure water?
What is 7
400
N2 + 3H2 → 2NH3
How many hydrogen atoms are in the reactants?
What is 6
400
N2 + 3H2→ 2NH3
How many hydrogen atoms are on each side of the balanced equation?
What is 6
500
Trail mix (Chex mix) is this type of mixture
HETEROGENEOUS MIXTURE
500
Identify the properties of water responsible for the observed phenomena
Model 1 SURFACE TENSION, Model 2 COHESION & SURFACE TENSION & ADHESION, Model 3 COHESION
500
Acids taste ____. Bases taste _____.
What is SOUR and BITTER
500
Barium is in Group _____ and Period ____. Its mass is ______ and atomic number is _______.
What is Group 2, Period 6, Mass is 137 and Atomic number is 56
500
DAILY DOUBLE!! *Extra 200 points*
Count the number of each type of atom in the formula
H₃[Al(OH)(PO₄)₂]
Hydrogen (H): 3+1=43 + 1 = 43+1=4
Aluminum (Al): 111
Oxygen (O): 1+(4×2)=91 + (4 \times 2) = 91+(4×2)=9
Phosphorus (P): 222
What is 16