What are the two pure substances? Elements and compounds
What substance is made up of only one kind of atom? element
True or False: An element can be broken down into simpler substances.
Is water an element or compound? Why? Compound, because it can be broken down into simpler substances
Substances combined so that each substance keeps its own properties What is a mixture? Substances combined so that each substance keeps its own properties
What are the three kinds of mixtures? Solutions, colloids, suspensions
A mixture is classified depending on ______________. The size of its particles
In what type of mixture do the substances settle to the bottom ? Suspension
What does it mean when a substance is malleable ? That it is able to be hammered. Metals are malleable.
What is viscosity ? A substance’s resistance to flow. Honey and maple syrup have a high viscosity
Process that separates a mixture based on the size of the particles What is filtration ? Process that separates a mixture based on the size of the particles
What is a physical change? A characteristic or a material that can be observed or measured without changing the composition of the substances
A material’s ability to burn in the presence of oxygen What is flammability? A material’s ability to burn in the presence of oxygen
Name the three types of chemical change? Change in color Formation of a gas Formation of a precipitate
What were the two substances that Mr Rountree mixed to create a precipitate? Milk and vinegar
A solid that forms and separates from a liquid mixture What is a precipitate? A solid that forms and separates from a liquid mixture
A substances mass per unit of volume(mass divided by volume) What is density? A substances mass per unit of volume(mass divided by volume)
What compounds form when a candle burns? water and carbon dioxide
Copper is an example of a _____________. Element
Water is an example of a __________________. Compound
Sugar water is an example of a ___________. Solution
What is distillation? Separates a mixture based on boiling point. For instance, it can be used to separate salt and water from seawater.