Mdterm Flashcards
Substances changed into new and different substances
Chemical change
A chemical combination of substances
Compound
Take shape and volume of container
Gas
Center part of an atom
nucleus
The mass per unit volume of a substance
Density
Characteristics of a substance
property
Change in appearance of a substance
Physical change
Simplest form of a substance
Element
Take shape of container but maintains volume
Liquid
Subatomic particle and Nucleaus with no charge
Neutron
Definite Shape and volume
Solid
Sub atomic particle in nucleus with a positive charge
Proton
What does S I stand for
Inter-national system of units
What are two benefits of using S I measurements
Helps scientists share and compare data
What is the basic unit of length in S I
Meter
What determines the prefix use when measuring objects and S I system
The size of the object
How much larger is a KM than a m
1000 times larger
What does temperature describe at what temperature in Celsius does water freeze and boil
How hot or cold it is and 0°C and hundreds degrees Celsius
What prefix would be used when measuring the length of a pencil,science lab,and if distance from Allentown to Washington
Centimeter, meter,kilometer,
Volume describes what what unit is used to measure the volume of liquid
The amount of space something takes up, a liter
Grams is The unit of measure used from mass how many grams do you estimated the following objects weigh a paperclip and a science book
3 g, 20 g, 3,000
A physical combination of substances
Mixture
Parts of experiment that remainsfixed
Constants
Unit for mass
Grams
