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Prior Knowlege: Matter

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Carolina Bonetti

on 25 August 2014

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Transcript of Prior Knowlege: Matter

What is matter?
Different Properties of Matter
How can you show that salt water is a mixture and not a compound?
You could evaporate the water from the salt water to leave the salt. The water and the salt are able to be separated.

Why did Mendeleev leave three blank spaces in his periodic table?
He observed that there still where undiscovered elements.

Why do elements in a group of the periodic table have similar properties?
Because some elements have the same or similar number of atoms.

An atom that contains 74 protons, 74 electrons and 108 neutrons. Which element is it?

Tungsten, we checked the number of protons it had and subtracted the atomic mass by the # of protons
Multiple Choice Answers/Question Answers
1. The building blocks of matter are called?
2. A formula shows the ratio of elements in a
c) compound
3. What is the density of an object?
Mass times
4. Draw Dalton’s atom model

Prior Knowledge of Matter
By Carolina B. , Kevin F. , Manuel V.
-Anything that takes up space and has mass. It is composed of atoms and molecules.
-definite shape,size,volume,may shatter.

Atoms are bonded and vibrate less than in a liquid or gas state.

Solids can change to liquids with enough heat. Solids can aslo change into gases.
No definite shape or volume, may scatter.

Atoms are not bonded and vibrate more than in a solid or liquid state.

Gases can change to liquids by condensation, and from gases to solids.
Plasmas are like gases, but they are of free electrons and ions of the element of neon.

It is the most common state of matter.

Plasma is made up of groups of positively and negatively charged particles.

-No definite shape, or volume, may splatter.

Atoms are not bonded
and vibrate more then solids but less than gases.

Liquids can change from liquids to solids by freezing, and for gases by evaporation.
a) What is the volume?
b) What is the mass?
1. a Substance whose particles are close together but move freely around one another is a(n):
b) liquid
3. When a liquid freezes, its particles…
d) slow down and form patterns
1. The atomic number of an atom is determined by the number of:
a) protons

2.In the current periodic table, elements are arranged according to:
b) atomic number
3. Of the following, the group that contains the most reactive elements is:
a) alkali metals

4. Unlike metals, many nonmetals are
c) gases at room temperature
It is not possible to breakdown the atom .

Molecules Atoms
Molecules can be broken down into atoms

Both are not visible to the naked eyes
An atom consists of a nucleus
Molecule consists of two or more atoms bonded together.
An atom is a single element.
A molecule may or may not consist of a single element.
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