Particle Model
Laws
Mixtures
Physical VS Chemical
Random
100
How many points are in the particle model of matter?
What is 5?
100
In a chemical change, the total mass of the new substance is always the same amount as the original substance. What law is this?
What is the Law of Conservation of Mass?
100
What is a mixture?
What ia substance made by mixing other substances together?
100
What is a physical change?
What is when a substance changes in form but not in chemical composition?
100
What did Francis Bacon discover in the early year of chemistry?
He believed that science should be based on experimental evidence, not thought.
200
What happens to particles when they are cooled or heated?
What is they contract when cooled and expand when heated?
200
What is the Law of Definite Composition?
What is Compounds are pure substances that contain two or more elements combined together in a definite proportion?
200
What is a homogenous mixture?
What is a mixture where you can't see the different particles or substances?
200
What is chemical change?
What is causes one or more new substances to be formed?
200
What WHIMS symbol is this?
What is flammable?
300
What point on the particle model of matter deals with pure substances?
Each pure substance has unique particles , different from other pure substances.
300
What is Dalton's Theory of the atom? You must name at least 2 points.
Hint: There are 4 // Double Hint: Particle Model of Matter
(1) All things are made up of tiny particles called atoms, (2) atoms cannot be created, destroyed or divided into smaller pieces, (3) atoms have identical size and mass in the same substance, each substance is different, (4) Compounds are created when atoms of different elements link together.
300
What is a heterogenous mixture?
What is a mixture where you can see the different particles and or substances?
300
List 3 clues to tell if you have a chemical change
Answers may vary: changes are difficult to reverse, heat is released or absorbed, starting material is used up, gas bubbles form in a liquid, precipitate forms in a liquid, changes in color, and material with new properties is formed.
300
What are 3 kinds of heterogenous mixtures?
What is colloids and emulsions, mechanical mixtures, and suspensions?
400
What happens to particles when they are affected by temperature?
What is Particles at a high temp will move faster than particles at a low temp?
400
List the men in order starting with Dalton who added onto his model and together created the model of the atom we use today.
What is Dalton, Thomson, Rutherford, Bohr, Schrodingers?
400
What is a pure substance?
What is substances that are made up of only one kind of particle and have a fixed or constant structure?
400
What is the difference between a quantitive property and a qualitive property?
What is quantitive that is something that can be measured and qualitive is something that can be described.
400
What did Robert Boyle discover?
He recognized that elements could be combined to form compounds laying the groundwork for future chemists.
500
What are the 4 main points of the particle model of matter?
What is Space between particles, Everything is made of particles, Particles are attracted to each other, Particles are always moving?
500
Name one of the models that added onto Dalton's model.
Answers may vary: Thomson- pictured the negatively charged electrons were stuck in a positively charged mass. Rasin bun model. Rutherford- hypothesized the mass of an atomwin in the center and was known as an atomic nucleus. The rest was empty and made of smaller electrons. (Made word protons) Bohr- pictured atom like a mini solar system with electrons rotating around nucleus. Schrodinger- found that electrons have certain energy levels and act as waves, he then provided mathematicl formula to determine where an electron is in relation to nucleus.
500
What are 2 ways matter can be classified?
What is composition and pure substance?
500
Is burning wood a physical or chemical change? Explain why.
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What is chemical?
Answers may vary: New substances are formed, can't be changed back, heat is added and absorbed.
500
Who created the rasin bun or plum pudding model?
Who is JJ Thomson?