Science Midterm Chapter 7 Flashcards
Anything that has mass and takes up substance can be considered as
matter
Also known as the building blocks of matter, these tiny particles are 1,000,000 ties smaller that the width of a human hair
atoms
If you were to investigate the nucleus of an atom you would likely find
neutrons and protons
Matter with a compostion that is always the same would be expected in a
substance
Iron, Calcium, and Carbon are all examples of
elements
What would you call H2O and CO2
compounds
In order for a substance, containing two or more atoms of different elements, to be considered a compound, the different atoms must be
chemically combined
Carbon -14 is a great example of an
isotope
H2O and CO2 are both examples of a
chemical Formula
A cesar salad is a great example of a
heterogeneous mixture
When you mix a powdered drink like Gatorade with water, the mix is referred to as the
solute
What is the ability of an object to be dissolved
solubility
Which of the following best classifies physical properties (Size dependent and size independent, Length dependent and length independent, mass and neutrons, or solutes)
size dependent and size independent
What formula do we use to determine density
mass/volume
Which of the following are considered dependent properties (Density, Boiling point, Melting point, or volume)
volume
If you had a density of 5g/mL and a mass of 50g, what would the volume need to be
10mL (V=M/D)
What is another word for homogeneous mixture?
solution
What would be a good example of physical change (Ice melting in a pool of water, Silver tarnishing, Roasting marshmallows, Or rust forming on a nail)
Ice melting in a pool of water
When you have a physical change you will never end up with
A new substance
Adding thermal energy to matter may cause
The state to change
The boiling point of matter is the point at which
A liquid becomes a gas
What do we call it when a gas becomes a liquid
condensation
Freezing and melting are reverse processes, but they
occur at the same temperatures
If a sample water has a mass of 100g and you add 10g of solute, you will have a final solution with a mass of 110g this is because the law of
conservation of mass
Which never changes during a physical change (States of matter, Temperature, Volume, or Total mass)
Total mass
What is a good example of a chemical property (Ability to burn, Ability to change states, Ability to change size, or Ability to freeze)
Ability to burn
When a small branch of a tree decomposes in the forest, it is an example of
A chemical change
Which one of these is proof of chemical change (Bubbles, The formation of the same substance, The formation of a new substance, or Added energy)
The formation of a new substance
When atoms collide and rerange and bond into new combinations you have
A new substance
What do we call the substances on the left side of the chemical equation, before the reaction occurs?
Reactants
What do we call the new substances formed after a chemical reaction?
Products
The arrow in a chemical formula is read as
Yields
Higher temperatures and concentrations usually increase the rate of reaction but you can also increase the rate of reaction by increasing the
Area
The water level in a cylinder is determined by the ____ line
meniscus
To measure the volume of an irregular shape such as a bolt you have to measure the ________ of water
displacement
Physical properties can either be size ______ or size _____
Dependent or independent
What is another way to represent volume besides using the mL measurement
cm3
