Classifying Matter
Matter can be separated into two major groups. One being pure substances, and the other being this.
What are mixtures?
The atomic number of an element tells us this about an element.
The number of protons located in the nucleus of the atom.
Chemical changes are different from physical ones. This is an example of result that shows a chemical change has occured.
What is a change of colour, odour, formation of a new substance, or energy exchange (release or absorption)?
Ionic compounds are made up of this and a non-metal.
What is metal
What does the Law of Conservation of Mass state?
What is the mass of the reactants will be the same as the mass of the products?
The subatomic particles revolve around the nucleus of the atom.
What are electrons?
The periodic table includes three types of elements: metals, non-metals, and a third type that can be found along the boundaries of the "staircase" on the table.
What are metalloids?
In instant cold packs, a physical snapping of the pack initializes a chemical reaction, making it cool to attend to injuries. This is an example of what reaction?
What is an endothermic reaction?
Electrolytes are minerals that life needs to survive, helping the electrical current flow throughout an organism. Electrolytes are these types of compounds.
What are ionic compounds?
Fire burning is an example of this exothermic reaction.
What is Combustion?
In a solution, for example, table salt mixed with water, the salt is called the solute (solid dissolved) while the water is called this term.
What is the solvent?
Columns of the periodic table are called families/groups. Rows of the periodic table go by this name.
What are periods?
Factors affecting rates of reactions (heat, concentration, surface area, catalyst, etc.) all increase the likelihood of this occurring between the reactants to form products.
What is a collision?
What is the chemical formula for lithium oxide?
What is Li2O?
A system that is exposed to the outside environment, allowing exchange between the system and the surroundings, is known as this.
What is an open system?
Baking soda (NaHCO3) is an example of this kind of pure substance.
What is a compound?
Alkaline earth metals are located in this family/group number on the periodic table.
What is group 2?
This is the chemical name for N2O3.
What is dinitrogen trioxide?
Ionic compounds are strong conductors of electricity (allow an electrical current to run through them). Molecular compounds are weak conductors but strong ______?
What are insulators?
In a chemical reaction, Nitrogen and Hydrogen combine to make Hydrogen Nitride (Ammonia). If Ammonia (product) has a total mass of 14 grams, and Hydrogen (reactant) has a total mass of 6 grams, what is the mass of Nitrogen (reactant)?
What is 8 grams?
Milk is an example of this type of mixture, which is difficult to separate into its given parts (homogenous).
What is a colloid?
Which family/group has the most stable and unreactive elements (name or number)?
What are Noble Gases (Group 18)?
Creatine kinase helps process creatine (an amino acid) to produce energy (ATP) efficiently. In chemistry, what term would we use to describe its role in the production of
What is a catalyst?
What is the chemical formula for heptacarbon tribromide?
What is C7Br3 ?
After a magnesium ribbon is burned inside a completely sealed, airtight flash-bulb, the white powder (Magnesium Oxide) produced appears to weigh more than the original metal. However, the scale reading for the entire bulb remains exactly the same due to this specific reason.
What is the combined mass of oxygen gas combined with the magnesium mass equal to the product (magnesium oxide)?