The Basics
Name 2 of the 3 types of materials we would need goggles to work with.
Heat, Glass, Chemicals
What is the physical form of CuSO4(aq)?
aqueous or solution
What element has 36 protons?
Krypton
Which particles in an atom can be changed WITHOUT changing the identity of the element?
Neutrons and electrons
Which of the following is matter? (can be more than 1)
Heat
Air
Door
Cells
Which of the following is the MOST reactive element?
Silver Scandium Helium Barium
Barium
How many protons and electrons are in Germanium?
32 protons and 32 electrons
How can YOU determine the identity of an unknown piece of metal?
Find the mass and volume of the piece of metal, calculate the density, and compare it to known densities.
Convert 256 milliliters to liters.
.256 Liters
Is calcium a metal, nonmetal, or metalloid?
Metal
Which of the 3 main particle in the atom was discovered last?
neutrons
Why can't an element be changed into another element by chemical means?
Possible answers: Law of Conservation of Matter states that the elements in the reactants, have to have the same identity and quantity of elements i the products.
OR
The definition of a chemical reaction is the rearrange the elements in compounds to form new products using electrons, NOT changing the nucleus of the atom which would change the identity of the element.
What is the density of an unknown substance if its volume is 50 mL and its mass is 25 g?
.5 g/mL
Name one element on the periodic table that is an alkaline earth metal.
Beryllium, Magnesium, Calcium, Strontium, Barium, or Radium
How can you determine the atomic mass of an atom if you know how many protons, electrons, and neutrons it has?
Add the number of protons and neutrons together.
What is wrong with the following statement: The sun can be classified as matter, because we can see the sun and we can feel the heat coming from the sun.
The definition of matter is anything that has mass and volume. The sun can be classified as matter, because it is made of atoms of hydrogen and helium, and atoms have weight and volume.
Find the volume of 35 grams of gold.
(Density of gold = 19.3 g/mL)
Need correct label and sig figs.
1.8 mL
When copper sulfate, CuSO4, reacts with calcium oxide, CaO, the resulting products are copper oxide, CuO, and a clear solution. What is the identity of the clear solution?
CaSO4(aq)
Predict the number of neutrons in tungsten.
110 neutrons
What are the 4 steps of reciprocal learning when reading a text?
Predicting, Clarifying, Questioning/Speculating, Summarizing