Chapter 1 Math Reviewthe test will look very similar to these questions. Make sure you know how to do them or ask for help (your parents or teacher).
a.) Identity Property of Addition
c.) Identity Property of Multiplication
e.)Commutative Property of Addition
b.)Commutative Property of Multiplication
d.)Associative Property of Multiplication
f.)Associative Property of Addition
Write the letter next to each equation to show which property is being represented
1. 81 x 6 = 6 x 81
2. 18+ (5 + 7) = (18 + 5) + 7
3. 1 x 4= 4
4. 12 x (6 x 4) = (12 x 6 x 4
5. 0 + 18 = 18
6. 22 + 4 + 189 = 4 + 22 +189

the answer is: d) o, f, and kr.

atomic radius of bromine (br) is 114 pm.

atomic radius of oxygen (o) is 73 pm.

atomic radius of fluorine (f) is 72 pm.

atomic radius of krypron (kr) is 112 pm.

the atomic radius of a chemical element is a measure of the size of its atom.

the atomic radius varies with increasing atomic number, but usually increases because of increasing of number of electrons.

the atomic radius decreases across the periods because an increasing number of protons, because greater attraction between the protons and electrons.

the answer is a.

step-by-step explanation:

in three games of golf, alex shot two under par four times.