Atoms
One type of Atom
Gold
Helium
Copper
Sodium
When can a liquid enter a gaseous phase?
a. when its cooled
b. without boiling
c. before boiling
b. without boiling
In chemistry, __ refers to a substance that is composed of the same particles throughout.
Element
a substance made up of at least 2 different substances
What gives materials different properties?
When they are made up of different particles
More than one of same type of atom
Sulfur
Bromine
Nitrogen
What does indicator mean?
a. a state of mass and volume
b. any device that converts an amount of radiation
c. a chemical compound that changes its color in presence of an acid base
c. a chemical compound that changes its color in presence of an acid base
Give me an example of a crystalline structure.
Salt
Define heat
thermal energy; energy can be understood as the total kinetic energy of all the particles in the material
Yes
Symbol for:
Gold
Iron
Au
Fe
Why does it make a differene if the lid id over the container?
a. the odor can go through the lid
b. with the lid off, the odor can reach just above where the lid would be
c. the lid kept the smell from moving
d. with the lid on, the odor must go through the sides of the container
c. the lid kept the smell from moving
What is the formula for volume?
length x width x height (l x w x h)
Define temperature
a measure of the average kinetic energy of particles in that sample
What makes one element different from another?
its atoms and its properties
Example of a pure substance
Sugar
Salt
Anything made of 1 material
How does the odor get from a source to the nose?
a. it travels through the air
b. it moves around the container and stays there
c. the odor moves from object to object until it reaches your nose
d. the odor radiates outward from the source in straight lines in all directions
a. it travels through the air
Name the 3 states of matter.
solid, liquid, gas
What state of matter is salt?
Solid
What evidence do you have that gases are different?
a. We can see that they are different
b. they behave differently when they give off the light
c. some gases move faster or slower than others
b. they behave differently when they give off the light
What is the smallest part of an element?
Atom
Who formulated one of the most important contributions to chemistry?
a. Franklin
b. Mendeleev
c. Carver
d. Einstein
b. Mendeleev
Elements arranged according to properties related to the mass of each element's atoms and their predictable patterns
Periodic Table
In chemistry, ___ refers to a substance that is composed to the same particles throughout.
Pure
Can some elements share all properties?
a. Some elements can share all properties, so they are different to tell apart
b. Gold and Fool's gold share all the same properties
c. If they share all the same properties, they would be the same substances
c. If they share all the same properties, they would be the same substances