Show:
Chemical
Physical
MDV
Elements
Wild
100
What is a chemical property?
A chemical property is characteristic of an element/pure substance that describes its ability to change into different substances.
100
What is a physical property?
A physical property is characteristic of an element/pure substance that can be observed without changing it into another substance (observable by your 5 senses).
100
What is mass? What is used to measure it?
Mass is the amount of matter in an object. It is measured by a triple beam balance.
100
How can elements, ions, and isotopes be identified?
protons/atomic number, electrons, neutrons
100
What is the difference between weight and mass?
Mass is a constant and weight is a variable. Weight depends on gravitational pull/location while mass is not. This makes mass better for scientist to use.
200
Are mixtures physically or chemically combined? Name the two types.
Physically; homogenous and heterogeneous
200
What is volume?
Volume is the amount of space matter takes up.
200
How do you calculate the amount of neutrons?
atomic mass - atomic #
200
Why are labs repeated?
To verify results
300
How do you calculate mass, density and volume?
Mass/density=volume, mass/volume=density, and density•volume=mass. Remember the triangle.
300
What are the three groups elements are classified in? name one characteristic of each.
Metals(conductivity, reactivity, ductile, malleability, shininess) metalloids(semiconductors, all solids at room temp., brittle, hard) and nonmetals(most are gases at room temp., if solid brittle, really bad conductors, dull colors, reactive except the noble gases)
300
What is a solution an example of? Describe.
Homogenous mixture; a mixture of substances where you cannot see the different substances easily
400
What system of measurement is used to measure MDV?
The SI (metric units). Grams, milliliters, cubic centimeters, etc.
400
What is on an element tile?
Atomic number, chemical symbol, and atomic mass.
400
What is a pure substance?
A pure substance is when everything in the "container" is the same exact thing(molecule, atom, or element).
500
How does a small block of iron have the same density as a bigger block of iron?
This is because density is the amount mass in a certain volume. So, if you take the mass and volume of each block they will be the same
500
What are the three main particles in an atom? Where are they located?
Protons, neutrons, and electrons. Protons and neutrons are together in the nucleus and electrons move rapidly around the nucleus.
500
What are three differences between compounds and mixtures?
mixtures: physically combined, elements keep their properties, not a set ratio, made from elements and compounds, no chemical formula compound: chemically combined, elements lose, or form new, properties, set ratio, made from elements only, chemical formula,