50 questions
In the equation for burning magnesium (2Mg + O2 -> 2MgO) what are the products?
2Mg
O2
2Mg + O2
2MgO
In what state of matter are the atoms moving the slowest?
Solid
Liquid
Gas
Plasma
How does adding heat affect liquid water?
it becomes a solid
its molecules move faster
new substances form
a color change is produced
What is the symbol for Hydrogen?
Hy
He
H
N
What is a negatively charged atom called?
Anion
Cation
Ion
What is a valence electron?
an electron that is found in the outermost shell of an atom.
an electron found in the innermost shell of an atom.
an electron found in the middle shell.
What are the reactants in the chemical equation pictured?
CH4 and CO2
CH4 and O2
CO2 and H2O
O2 and H2O
Which subatomic particle has NO CHARGE?
Protons
Neutrons
Electrons
Nucleus
Which subatomic particle has a POSITIVE charge?
Protons
Neutrons
Electrons
Nucleus
Which subatomic particle has a NEGATIVE charge?
Protons
Neutrons
Electrons
Nucleus
Which subatomic particle tells you the identity of the Element?
Protons
Neutrons
Electrons
Nucleus
In the formula 2C6H12O6, what is the Coefficient?
5
6
2
12
How many oxygen atoms are in this chemical formula?
6 oxygen atoms
2 oxygen atoms
3 oxygen atoms
4 oxygen atoms
In an endothermic reaction, heat is ...
taken in
given out
Which subatomic particle has NO CHARGE?
Protons
Neutrons
Electrons
Nucleus
Which subatomic particle has a NEGATIVE charge?
Protons
Neutrons
Electrons
Nucleus
Which subatomic particle has a NEUTRAL charge?
Protons
Neutrons
Electrons
Nucleus
Which subatomic particle has the smallest mass?
Protons
Neutrons
Electrons
Nucleus
Which subatomic particle is found OUTSIDE the nucleus?
Protons
Neutrons
Electrons
Nucleus
Which subatomic particle tells you the identity of the Element?
Protons
Neutrons
Electrons
Nucleus
If an element has 11 protons and 12 Neutrons, what is it's atomic mass?
12
11
23
1
A FULL OUTER SHELL has how many electrons? (Not including the first level)
8
7
4
10
What subatomic particle is also represented by the Atomic Number?
Protons
Neutrons
Nucleus
Shells
In the formula 5C6H12O6, how many molecules are present?
5
6
24
12
In the formula 5C6H12O6, how many different Elements are present?
5
6
3
12
In the formula 2C6H12O6, how many Hydrogen atoms are present?
5
24
3
12
In the formula 2C6H12O6, what is the Coefficient?
5
6
2
12
In the formula 2C6H12O6, how many TOTAL atoms are present?
48
24
6,12,6
30
What are the reactants in this equation?
CH4 and 2O2 and CO2 and 2H2O
CO2 and 2H2O
CH4 and 2O2
The Yield Sign
What are the products in this equation?
CO2 and 2H2O
CH4 and 2O2 and CO2 and 2H2O
CH4 and 2O2
The Yield Sign
What is the smallest particle of an element that still represents that element?
atom
isotope
proton
quark