Atoms
Elements
Bonding
Chemical Equations
Actual problems
100
Most of the mass of an atom is here.
What is the nucleus?
100
Has atomic number 2.
What is helium?
100
Elements with full valence shells are in this group.
What are noble gases (group 18)?
100

What are the atoms on the left side of the arrow in a chemical reaction called?

What are reactants?

100

Balance the following equation. What are the coefficients in front of the atoms. 

C + Fe2O3 --> Fe + CO

3 C + Fe2O3 --> 2 Fe + 3 CO

200
Positively charged particle in an atom.
What is a proton?
200

Name an element that has 5 valence electrons

Nitrogen, Phosphorus, Arsenic, Antimonu, Bismuth, Moscovium, Erbium, or Fermium

200

Name the type of bonding that shares electrons

What is covalent bonding?

200
Numbers put in front of elements or compounds in order to balance equations.
What are coefficients?
200

Draw the lewis structure for Chlorine

Should be Cl with 7 dots around it!!!!

300

What part of the atom has both Protons and Neutrons.

The nucleus

300

The only element with 1 proton

What is hydrogen?

300

These types of elements bond during ionic bonding

What is metals and nonmetals

300

Substances that appear to the right of the arrow.

What are products?

300

Name the following compound. NaCl

What is Sodium Chloride

400
Negatively charged particles found in atoms.
What are electrons?
400

What is the name of the element with the letters "Pb"

What is lead

400

These elements bond for covalent bonding

What are nonmetals and nonmetals. 

400
Mass of reactants is equal to the mass of the products.
What is the law of conservation of mass?
400

Write the chemical formula for Carbon Tetrachloride

CCl4

500
An atom that has either lost or gained an electron.
What is an ion?
500
Elements with varying numbers of neutrons.
What are isotopes?
500

This type of bonding occurs when the electronegativity difference is more than 1.7 

What is ionic bonding

500

How many molecules does an element with no coefficient or subscript have in an equation?

Just one :)

500

Balance the following equation. What are the coefficients in front of the atoms. 

KClO3 --> KCl + O2

2 KClO3 --> 2 KCl + 3 O2

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