A substance composed of only one type of atom and represented by a chemical symbol is
What is an element
100
Name the 3 particles of an atom and their charges
What is a proton- positive electron-negative neutron-no charge
100
If 10 cubic centimeters of a liquid has a mass of 70 grams, what is its density?
What is 7 g/cm3
100
What is a poor conductor of heat?
What is a nonmetal
100
How do you know a chemical change has occured?
A new substance is formed
200
Name a substance that is considered a compound because it can be separated into several elements
What is air
200
What is the smallest particle of the element gold that can still be classified as gold?
What is an atom
200
If a cube has a mass of 55 g and a length of 3 cm, what is the density?
What is 2.03
200
More than two-thirds of the elements of the periodic table are...
What is a metal?
200
If Jose wants to measure 46 mL of a liquid, what equipment would be most accurate?
What is a graduated cylinder
300
What is formed when two elements combine chemically?
What is a compound?
300
A dilute solution of copper sulfate CuSO4 is used to treat aquarium fish for parasitic infections. How many different elements are found in copper sulfate?
What is 3
300
The volume of a marble is 50 mL and has a density of 6 g/mL. What is the mass of the marble
What is 300 grams
300
If an element has luster and is a good conductor what is it and give an example of one
What is a metal
300
Which element is present in all living matter?
What is carbon
400
This type of change must occur to form a compound....
What is a chemical change?
400
A scientist combines oxygen and hydrogen to form water. This combination illustrates that water is a
What is a compound
400
A cube has a mass of 320 g and a width of 3 cm. What is the density
What is 11.85 g/cm3
400
Titanium is a ____________. which of the following are similar.
a. Mg, Ar, B
b. Si, As, Se
c. Cl, He, Ne
d. Cu, Na, Mg
What is Metal, B.
400
A mixture of solutions produces a solid is an example of what kind of change
What is a chemical change
500
Sodium acetate, NaC2H3O2, is used for heat. How many elements and atoms are found in sodium acetate?
What is 4 elements and 8 atoms
500
What is the chemical formula of carbondioxide and is it a mixture or a compound and why?
What is CO2, a compound because the atoms of the elements are combined in a fix proportion
500
A rock has a mass of 70 grams in a 50 ml graduated cylinder. If it read 39 ml before the marble was submerged and 49 mL after, what is the density of the marble?
What is 7 g/mL
500
I may be lustrous, I may be malleable, I am a semi conductor. What am I?
What is a metalloid
500
What is the difference between an element and a compound?
Elements are pure substances and compounds are a combination of two or more elements.