Classification
These are what all matter is made up of in a widely accepted theory that we started this unit by looking at.
What are particles?
This physical property is also known as "shininess".
What is lustre?
In addition to mass, this quantity also factors into an object's density.
What is volume?
This is what is represented by an element's atomic number
What are the number of protons?
This is the name for the substances that are produced by a chemical reaction.
What are products?
In this type of mixture, particles appear to blend into what appears to be a single substance.
What is a homogenous mixture (or solution)?
This type of change involves particles moving around and amongst each other in their current form.
What is a physical change?
This is the volume of a rock that moves the reading from 10.5 mL to 16.0 mL when completely submerged in water in a graduated cylinder.
What is 5.5 mL / cm3?
These are the three particles that make up any element on the periodic table.
What are protons, neutrons and electrons?
This is the information being provided when you balance a chemical equation
What is the proportion of each substance involved? (accept: amount of each, number of particles of each substance, or similar)
This is the name of a substance that has two of the same atom bonded together
What is a diatomic element?
This type of property is unique to a particular pure substance.
What is a characteristic physical property?
This is the mass of a 0.5 g/mL substance that fills one cup (250mL).
What is 125g?
The mass of an atom is measured in AMU (atomic mass units) based on the number of THESE two particles in the nucleus.
What are protons and neutrons?
This is another name for an "unbalanced" chemical equation
What is a skeleton equation?
This type of substance has two or more different atoms chemically bonded together into a single particle.
What is a compound?
A chemical property can be thought of as a substance's capacity to do this.
What is undergo a chemical change? (accept: react, react with.., rearrange the particle's composition, etc.)
This is the impact on the density of a fixed mass of gas if a container holding it is expanded to two times its size
What is cut in half?
This is the number of neutrons in an atom of sodium (Na) that has a mass number of 23. (Hint: you may need to refer to the periodic table)
What is 12?
This is the coefficient for the 2nd reactant listed in the balanced form of the following skeleton equation:
C2H2 + O2 --> H2O + CO2
What is 5?
Although a pure substance has identical particles, it may contain multiple different versions of these.
What are atoms?
This is the type of change that occurs when a chemist heats 100g of liquid alcohol on a hot plate and it "disappears" after 30 seconds.
What is a physical change?
This is the maximum number of liters that Aunt Bertha (mass: 297kg, density: 1.1 kg/L) can fill her 800L tub with so that it does not overflow after she submerges herself.
What is 530L?
This is the number of neutrons in an atom of hydrogen (H) that has a mass number of 1. (Hint: you may need to refer to the periodic table)
What is 0?
This is the coefficient for the 1st product listed in the balanced form of the following skeleton equation:
Al(NO3)3 + Ca(OH)2 --> Ca(NO3)2 + Al(OH)3
What is 3?