All Matter Test, Tuesday, 4/14/15

Question 0

What are the three main parts of an atom?

Answer 0

Proton

Neutron
And
Electrons

Question 1

What is an Atom?

Answer 1

The smallest part of an element, that still has the properties of the element.

Question 2

What is a Proton?

Answer 2

Positively charged particles (+) located in the nucleus (center) of the atom.

Question 3

What is a neutron?

Answer 3

No charge (o), located in the nucleus with the protons.

Question 4

What is a electron?

Answer 4

Negatively charged particles (-) located floating outside the nucleus in rings/shells. **The number of electrons is always equal to the number of protons.

Question 5

What is the nucleus?

Answer 5

The center of an atom.

Question 6

What is a molacule?

Answer 6

A molecule is made up of two or more atoms joined tightly together

Ex: water H2O hydrogen and oxygen combined to make H2O

Question 7

What is a compound?

Answer 7

Substances whose molecules contains atoms of different elements. Cannot be separated by ordinary means. Compounds are very different from the elements the make it. Ex: sand, hair, diamond, and carbon dioxide.

Question 8

What is a mixture?

Answer 8

A combination of two or more substances that do not form a new substance. Substances can easily be separated. Ex: trail mix

Question 9

What is a solution?

Answer 9

A mixture with one substance spread out easily into the other substance. **** DISSOLVE!!! Can sometimes be separated through evaporation. Ex: sugar spreads out evenly (dissolves) in coffee. Ex: sugar, honey,kool-aid mix.

Question 10

Properties

Answer 10

The characteristics or feature or features of matter.

1. Properties can be determined by observing or measuring.
2. Making observations: use your 5 senses
   A. Sight
   B. Smell
   C. Taste
   D. Touch
   E. Hear

Question 11

Chemical properties

Answer 11

Burns
Rust
Reacts with acids

Question 12

Physical properties

Answer 12

Color
Texture
Odor
Conducts heat
Conducts electricity 
Magnetic 
Floats or sinks in water
Solubility 
Boiling point
Melting point

Question 13

Difference between a physical property and a chemical property

Answer 13

A physical property is a property that can be observed, measured, or changed without changing the substance itself.

A chemical property is the ability of a substance to change into a new substance with different properties.

Question 14

Volume and weight lab

Answer 14

The volume changed after mixing beads and sand
A. Volume didn’t double because he sand filled the spaces between the beads.=39ml

2. Weight changed after mixing beads and sand
   A. Adding the weight of the beads to the sand gave us the weight of the mixture. =50 grams