Chemistry
Chemistry
Chemistry
Chemistry
100
Does the Lewis diagram have multiple rings or no?
no.
100
What is the chemical formula for water?
H2O
100
Is wood being chopped up into little pieces a chemical or physical change? Why?
Physical, because it's still wood. It hasn't changed into a different substance.
100
What is a charged atom called? a) a yron b) an ion c)a chargon
b, an ion.
200
If there are 5 protons, how many electrons are there?
5.
200
How many elements are there in N3MgPC3?
4.
200
Name 1 element from group 17 and 18.
There are multiple choices...
200
What is the Lewis diagram for He.
. He '
300
What does the element combination H2O create? a)sand b)water
Water.
300
which of these elements is a non-metal? a)sulfur b)Manganese c)Aluminum d)Beryllium
a, sulfur
300
What is the charge, mass, and location in the atom of protons, electrons, and neutrons?
-Protons= Positive, 1, in nucleus -Electrons= Negative, 1/200, orbits around nucleus on orbits -Neutrons= Neutral, 1, in nucleus
300
The atomic mass is the same as the number of... a)Protons and Neutrons b)Protons c)Neutrons d)Electrons
c, neutrons.
400
What are examples of chemical change?
-change of colour -change of smell -change of temperature
400
How many electrons are there in 2 O(SBe4)2?
O=2, S=4, Be=16 2+4+16=22
400
What are the other names for mechanical mixture and solution ?
MM= Heterogeneous Mixture.. S= Homogeneous Mixture
400
True or false statement? These outer electrons are called Valence Electrons. If false what is the name?
True.
500
What are the groups in the periodic table?
Group 18/8 - Nobles Gases Group 17/7 - Halogens Group 2 - Alkaline Earth Metals Group 1 - Alkali Metals
500
What different types of atoms are there in AgH3C6O4 and how many of each
Ag- Silver. 1 H- Hydrogen. 3 C- Carbon. 6 O- Oxygen. 4
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