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Flashcards in Science Matter Test Deck (42)
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0
Q

Atoms

A
  1. Tiniest particles of matter
  2. Building blocks of matter
  3. Same properties as matter
  4. smallest part of element
  5. Found in nucleus
  6. Never seen before
1
Q

Review mass weight volume density flashcards!!!!

A

Nitya

2
Q

Matter

A

Anything that takes up space and has mass.

3
Q

Protons

A

Positively charged

Found in nucleus

4
Q

What is chemistry

A

Study of matter

5
Q

Special properties

A

Shape, size, color, oror

6
Q

Electron

A

Negatively charged

Circles the nucleus in an electron cloud

7
Q

Molecule

A

All matter Is made of molecules

Must be chemically joined together

8
Q

Elements

A

Can’t be broken down
Made of one kind of atom
Can’t be simplified

9
Q

Compound

A

Diff atoms joined to form molecules
Made of many molecules
Have formulas

10
Q

Mixtures

A

No chem. reaction
2+ subs., compounds, or both
No symbols or formulas
Properties are not always the same

11
Q
Analogy:
Smallest amount of ice cream?
2+ scoops of same IC
Diff flavors of IC
List of IC
A

Smallest scoop of IC= atom
2+ scoops of same IC is molecule
Diff flavors of IC is compound
List of IC is elements

12
Q

Conservation of matter

A

Matter cannot be created or destroyed, it can only change its form

13
Q

How many elements in the periodic table

A

109

14
Q

General properties

A

Mass, weight, volume, density

15
Q

How many elements made by nature and scientists

A

90 from nature, 19 by man

16
Q

What is solubility?

A

The ability of a liquid( solvent) to dissolve a substance(solute)

THE ABILITY FOR A SUBSTANCE TO DISSOLVE IN ANOTHER SUBSTANCE

17
Q

What is a solution?

A

A mixture with the dissolved substance or solute and the solvent
A mix of 2 subs.

18
Q

What is a solvent?

A

A solvent is a liquid which dissolves a substance.

It usually has a greater amount

19
Q

Dependent variable

A

What is observed, measured
Effect of independent variable
Data
WHAT DO I MEASURE

20
Q

Solute?

A

It is the substance that dissolves in the solvent to form a solution

21
Q

What are the 4 states of matter?

A

Gas
Liquid
Solid
Plasma

22
Q

What is a phys. Chan

A

Doesn’t change substances chemical identity
THE FORM OR APPEARANCE OF MATTER CHANGES, BUT NOT ITS COMPOSITION. DOES NOT FORM NEW SUBSTANCE!!!
Reversible change
Same materials

23
Q

Chem. properties?

A

Reactivity is subs. Reacting to each other

Flammability is how easily a sub. Burns when exposed to fire

24
Q

What is the Periodic Table?

A

Chart that classifies all the elements and their symbols in a way that is easy to understand

25
Q

Neutron

A

No charge

Found in nucleus

26
Q

Control variable

A

Things that could change but don’t
Kept constant or the same
Allows for fair test
WHAT STAYS THE SAME

27
Q

Name some chem. change indicators

A
Heat, energy or light
Color
Odor
New substance
Change in mass
Gas produced
28
Q

Scientific process

A
Question
Observation
Prediction, hypothesis
Materials
Procedure, safety rules
Results
Conclusion
Reflection
29
Q

Independent variable

A

What is tested by the scientist

WHAT IS CHANGED (by scientist)

30
Q

Chem change

A

Irreversible
Forms new substance
2+ chem. change indicators

31
Q

Suspension

A

Occurs when particles don’t dissolve

Mixture turns cloudy

32
Q

Speed of molecules and arrangement of gas

A

Very very fast

Spread out

33
Q

Speed of molecules and arrangement of solid

A

Very very slow

Compact and close together

34
Q

Speed of molecules and arrangement of liquid

A

Moderate speed

Random spread in between liquid and gas

35
Q

Saturated

A

2 much dissolving in one substance

There is still the substance left at the bottom

36
Q

How does a substance change form

A

Energy

37
Q

Universal solvent

A

Water

37
Q

How do particles move When heated

A

Faster

37
Q

Density of water?

What will float/sink?

A

D= 1g/ml^3
Greater density. Sink
Lower density. Float

37
Q

What’s released during chem. reaction?

A

Energy

38
Q

Soluble

A

Solid that dissolves in a liquid