Mixtures are combinations of two or more types of matter
100
What is this jumbled word?
Telivoyc
Velocity
200
Why do we use standard units?
We use standard units to measure the length, width, area, and volume of an object.
200
How can matter be organized?
Matter can be organized by its properties.
200
Fill in the blanks
A change of state is a ________ _______ from one state of matter to another.
physical change
200
Fill in the blanks
Solutions can be separated using _______ and ________.
evaporation, distillation
200
What is gravity?
Gravity is a force that pulls all objects together.
300
How do we calculate density of an object?
We calculate density by dividing the mass of an object by its volume.
300
What are elements made of?
Elements are made of atoms.
300
Give an example of a physical change?
Various
Change of state (such as from solid to liquid or from gas to liquid)
Specific examples of state change include water freezing, alcohol evaporating and dry ice (solid carbon dioxide) subliming
Absorption of water into a towel
Crumpling a piece of paper
300
How do compounds form?
Compounds form when two or more elements combine chemically.
300
What is motion?
Motion is a change in the position of an object.
400
How do we measure weight?
We measure weight with an instrument called a scale.
400
Fill in the blanks
Elements in the periodic table are grouped by ______ _________
similar properties
400
Give an example of a chemical change?
Various
Cooking examples: popcorn, cake, pancakes, and eggs
Oxidation examples: rust or tarnishing
Combustion
Mixing chemicals
Rotting of fruit
Cooking rice
Explosion of fireworks
400
What is this jumbled word?
Mibenoc
combine
400
Fill in the blanks
Acceleration is a change over time in the _____ or _________ of a moving object.
speed, direction
500
What is this Jumbled word?
Tidysen
density
500
What is this jumbled word?
Nelsemet
Elements
500
Fill in the blanks
A chemical change forms a ___ _______ with different properties from the ______ _________.
new substance, original substance
500
What can we use litmus paper for?
We can use litmus paper to test for acids and bases.