What is anything that takes up space and has mass.
100
The amount of stuff that fits in a certain volume.
What is Density.
100
This type of reaction is exemplified by wood being burnt.
What is a chemical reaction.
100
We want to know how breakfast affects student test performance. Write a good hypothesis.
What is, If a student eats breakfast, then they will have better test scores.
100
Define heterogeneous mixture.
What is a mixture in which you can clearly identify 2 of more substances inside of it.
200
Name the positive and negative subatomic particles.
What is protons are positive and electrons are negative.
200
The equation for Density.
What is density equals mass divided by volume.
200
An example is mixing salt and water.
What is a physical reaction.
200
Based on the following information draw a graph.
Days Test Scores
M 67
W 71
Th 73
F 80
What is a line graph.
200
Compounds and elements are examples.
What is pure substances.
300
What are the chemical formulas for the compounds of Salt and Water?
What is NaCl and H20.
300
A piece of metal has the mass of 25 g and a volume of 13.5 mL. Calculate the density.
What is 1.85 g/mL.
300
Name two ways you know a reaction is chemical.
What is a new substance is formed, it cannot be undone.
300
We have found the following data. Based on it draw a valid conclusion.
Amount of Water Height of Plant
15 mL 4 "
11 mL 6"
8 mL 4"
What is 11 mL of water is the ideal amount for the tallest plant.
300
Seperate into heterogeneous mixtures and homogeneous mixtures.
-soda
-sandwich
-tea
-koolaid
-OJ with pulp
What is hetero is soda, sandwich, OJ, homogeneous is tea and koolaid.
400
Draw and label the parts (including charge) of an atom.
What is proton (positive) neutron (neutral) in the center, and electrons (negative) floating around in the electron cloud.
400
The density of a ball is 7.5 g/mL. If the mass of the ball is 450 g, calculate the volume.
What is 60 mL.
400
Seperate the physical and chemical changes:
-burning paper
-melting ice
-baking a cake
-mixing sugar water
What is physical is melting ice and mixing sugar water, chemical is burning paper and baking a cake.
400
Put the five steps of the scientific method in order.
What is Problem, Hypothesis, Experiment, Data (analysis), Conclusion
400
Name 5 elements.
What is oxygen, carbon, hydrogen, sodium, chlorine, etc.
500
Name the three states of matter as well as an example of each.
What is solid (ice), liquid (water), gas (water vapor/clouds).
500
The length, width, height of a box is 4 x 5 x 4. The density is 1.4 g/mL. Calculate the mass.
What is 112 g.
500
As you chew your food (masticate) it breaks down in your mouth. Based on your knowledge of physical and chemical reactions/changes which one would this be?
What is chemical due to saliva helping chemically break down food.
500
Do the following conversions:
10 g = ______ cg
1100 dm = _______ Km
0.8 HL = ________ L