2\6\23 sci Flashcards
What is the formula for density and volume
The formula for density is mass over volume and the formula for volume is length x width x height
What do endothermic and exothermic mean
Endothermic means a change in which energy is taken in, exothermic is which energy is released.
What is a mixture in which you cant see different parts
homogenus
What is the mixture in which you can see the different parts
heterogenus
Compare and contrast mixtures and compounds
Mixtures are 2 substances mixed but not chemical combined and a compound substances chemically combined.They are the same because they both try to be combined
t\f electrical energy is the energy of moving charged particles.
True
T\F Elements are the simplest substances.
True
t\f thermal energy flows from warmer objects to cooler objects
true
T\f Weight does not change in different places
false
T\f in a physical change matter changes into a new kind of matter
true
Light is an example of ____ energy
Electromagnetic
____ is anything that has a mass and takes up space
matter
____ is the ability to do work
energy
___ is a mixture in which the separated parts of the mixture are very evenly mixed together.
Homogenus
You can find the ___ of an object by dividing its mass by it’s volume
density
Which type of energy is known for motion?
Kinetic
Which of the following is an example of chemical change is it freezing water, bending a paperclip or burning wood?
Burning wood
Every chemical or physical change in matter includes a change in ___
energy
___ is a cubic centimeter that is used as a unit of measuring.
volume
____ is the amount of matter in an object
mass
The parts of a mixture are blank separated.
easily
A compound is ___.
Different properties from which an element is made
A chemical bond is the force that holds atoms ____
together
An atom is a particle of a ___.
element
Which of the following is an example of a physical property is the ability to burn, color or the ability to rust.
color
How many atoms are in a molecule of carbon dioxide
3
how many atoms are in a water molecule
3
How many atoms are in a molecule of oxygen
2
