States of Matter
Solid, Liquid, Gas
Which element has the symbol K?
Potassium
Is fruit salad a solution or mixture?
Mixture
Name the two groups of properties
reactants come together to make what?
products
liquid to gas
Name an element that is in the same group as Carbon (C).
Lead, Silicon
group 14
Give an example of a solution. Why is it a solution?
various answers
Give two examples of physical properties of a pencil.
various
What is a catalyst?
something that speeds up a reaction.
How are particles arranged in a solid?
tighly
Which element has 10 protons?
Neon
How can you undo a solution of water and sugar.
evaporation
If an object has good conductivity what does that mean?
It conducts heat/electricity well
What is the law of conservation of mass?
mass remains constant.
When a solid reaches its melting point it becomes what?
liquid
Name the two subatomic particles found in the nucleus of each atom.
protons, and neutrons.
If I have 5 grams of water and I add 6 grams of sugar. How much does my solution weigh?
11 grams
What is reflectivity
How easily something reflects light
What does an exothermic reaction feel like?
hot
What types of matter have a definite volume?
Titanium
What is the difference between a molecule and a compound
A compound is two or more different elements bonded together (different)
Melting ice is a physical change, what is a common example of a chemical change?
cooking an egg, exploding fireworks, baking
If 3H2 atoms react with 3O atoms. How many water molecules are made?
3