Dimension 3 Unit 1 Flashcards
Know by Friday
Physical or chemical properties of matter: Flammability
Chemical
Reactions with air, water, and other chemicals are..
Chemical properties of matter
Physical change
The material in the change can be structurally put back to what it was before, and you are only changing its structural state.
Chemical change
Making a new substance that can’t go back to its original form.
What are mixtures?
The combination of 2 or more substances
What do you use to measure mass?
triple beam balance
What do you use to measure volume?
graduated cylinder and ruler
What is the density of water?
1.0
What are signs of a chemical change?
Bubbling, fizzing, temperature change, odor, color change, gas formation, precipitate formation
What is the definition of matter?
anything that takes up space
Is sunlight an example of matter
noooooooooo!!!!!!!!!!!!!!!!!!!!!!!!!!
Homogenous mixture
A mixture where you cannot see the different parts
Heterogenous mixture
A mixture where you can see the different parts
Examples of homo-
-smoothie
-vitamin gummies
-cake batter
-lemonade
Examples of hetero-
-trail mix
-skittles
-lucky charms
Two objects have the same mass. One object is on earth and the other is on the moon. Do the objects have the same weight?
They do not have the same mass because on the moon there is a weaker gravitational pull so the weight is less on the moon.
What is the definition of weight?
Weight is a measurement of the pull of gravity on an object.
Compare physical and chemical changes. Provide a definition, example and explanation.
What is the definition of mass?
Mass is the amount of matter in an object?
What type of change occurs when you prepare scrambled eggs? Explain the evidence
Both chemical and physical change happens when you prepare scrambled eggs because when you scrabble the eggs you mix it up and you heat it up and change the temeture.
How do you calculate density for a regular shaped object?
D= Mass divided by volume
How do you calculate density for an irregular shaped object?
Find the volume using the water displacement method and then do the same D= M/V
how are the particles in a liquid
the particles in a liquid are close together and are moving in-between fast and slow
how are the particles in a solid
how are the particles in a solid are very close together and are moving slowly
how are the particles in a gas
they are really far apart and and move very fast
