Atoms
It's the subatomic particle with a positive charge.
Proton
Chemical bonds that are a result of two or more atoms sharing and electron.
Covalent bonds
This is the unit in which heat (energy) is measured.
Calorie
This number identifies an element. It also tells you how many protons and electrons are in an atom of that element.
Atomic Number
It's the electrons in the outer shell of an atom.
Valence electrons
This particle has a negative charge and is located outside the nucleus of an atom.
Electron
Chemical bonds that are formed when an atom gives up an electron an another gains an electron.
Ionic bond
It's the measurement of the average kinetic energy in a substance.
Temperature
It's the number of protons and neutrons in an atom.
Atomic Mass
NaHCO3 is made up of what elements?
Sodium
Hydrogen
Calcium
Oxygen
The particle of an atom that has no charge.
Neutron
It's the number that comes before a molecule in a chemical equation.
Coefficient
It's an increase in volume.
Expansion
The number of valence electrons in all Group 1 elements.
1
How many molecules of HCl are on the product side of Na + 4HCl ----> NaCl2 + H2
None
These two particles make up the nucleus of the atom.
Proton and Neutron
This number comes after an atom in a chemical formula. It tells you how many atoms of an element are in the compound or molecule.
Subscript
It's the decrease in volume due to cooling.
Contraction
The number of protons, electrons and neutrons in one atom of Potassium (K).
Hint: Potassium's atomic number is 19 and it's atomic mass is 39.098
19 protons
19 electrons
20 neutrons
Group 17 of the periodic table is also known by this family name.
Halogens
When an atom gives up a proton, it is no longer stable. What is this particle referred to as?
Negative ion
Write a chemical equation that describes what happens when sodium bicarbonate (NaHCO3) and Hydrochloric Acid (HCl) react.
NaHCO3 + HCL -----> NaCl + CO2 + H2O
It's the amount of heat absorbed by 130g of water as energy from the sun causes its temperature to change from 25 degrees celsius to 48 degrees celsius.
2,990 calories
The periodic table is organized from left to right by atomic number and this.
Reactivity
A student made a 110 ml cup of hot tea at 70 degrees celsius. She added 55 ml of milk at 37 degrees celsius. The final temperature was 58 degrees celsius. What is the final temperature of the hot tea?
- 12 degrees celcius