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What is chemistry?
The study of matter and how matter changes.
List properties to describe matter:
it as different properties and characteristics to identify and classify it, such as HARD, SOFT ,HOT, COLD, LIQUID, SOLID, OR GAS.
Am I considered matter?
Yes, and All the stuff around you.
what is matter?
anything that as mass and takes up space. Air, plastic, metal, wood, glass, paper, and cloth are examples.
What is a substance?
a Substance is a single kind of matter that is PURE. Meaning, it always has a specific makeup or composition. Like salt or water.
Why is Salt or Water considered pure substance?
water is always pure because it always stays the same whether it comes from a glacier or geyser. Salt is always pure whether from sea or mine.
How do we describe matter?
We describe matter by its properties: physical or chemical properties.
What are the physical properties of matter?
A physical property can be OBSERVED and does not change into another substance.
What are the chemical properties of matter?
Chemical property is a characteristic of a substance that can be CHANGED into different substances. To observe this, you must try to change it into another sub
What are the 4 elements matter was believed to be made up of. HINT: This was over 2,000 years ago.
Fire, water, air, earth
TRUE or FALSE:
Scientist know that all matter in the universe is made of >100different substances called elements.
True
A ______ is a substance that can not be broken down by physical or chemical means.
An ELEMENT
What are the simplest substances and can be identified by its specific property. Like aluminum, tin, helium, oxygen . They are represented by a letter symbol
C for carbon, O for oxygen
elements
What is the particle theory of matter?
The particle theory explains that all matter is made of ATOMS.
What is the basic particle from which all things are made?
ATOM
What is the charge of an atom? (Positive or Negative)
an atom has a positively charged center or another name for "center" is the nucleus.
