it changes
protons and neutrons
21 g
from warmer to colder
conduction, convection, radiation
shape
non-metal and non-metal
ionic
5
They have 8 valence electrons or a full outer shell
Liquid particles are moving faster with enough space to slide past each other
59
decreases
gas formation, temperature change, color change, precipitate formation, odor change
stays the same
chemical
metals
high melting point, good electrical conductors, shiny luster
CO2, H2O
none - they are neutrally charged as the protons are equal to the electrons
taste
color and odor change
chemical
It had the lowest density
indefinite shape, definite volume
Which of the following compounds are covalently bonded? CO2, NaCl, H2O, MgI
What happens to the temperature of a substance when it goes through a phase/state change?
When electrons are transferred between atoms to form a bond, it is this type of bond that forms.
Which way does heat transfer between substances?
The atomic weight of Cobalt (Co).
How is the particle motion of a liquid different from the motion of a solid?
If 5 g of baking soda reacts with 20 g of vinegar, carbon dioxide, water and salt is produced. If there is 1 g of carbon dioxide produced, and 3 g of salt produced, how much water is produced?
Most elements on the periodic table belong to this class.
Covalent bonds form between these classes of elements.
Why noble gasses do not normally form bonds.
What is evidence that food digesting is a chemical change?
Baking soda and vinegar combine and gas and water are produced. This is what type of change?
The number of valence electrons that arsenic (As) has.
What physical property would be the best to use to tell the difference between powdered sugar and baking soda in your kitchen at home?
This happens to the identity of matter during a chemical change.
Describe the shape and volume of a liquid.
Atoms as they appear on the periodic table of elements have this overall charge.
What happens to the energy of particles when a substance changes from a gas to a liquid?
Flammability and combustibility are this type of property?
Crumpling a piece of paper is a physical change because this physical property is the only thing that changes.
If you poured a red liquid, blue liquid and green liquid into a glass and the blue liquid formed a layer on the top of the others, what could you say about its density?
Most metallic elements have these properties.
What are the three ways that heat is transferred?
This is located in the nucleus of the atom
Evidence of a chemical change includes these pieces of evidence.
