Semester Exam 1
Help!
|
|
||||
|---|---|---|---|---|---|
| which axis of a graph is the dependent variable plotted? | vertical
🗑
|
||||
| On which axis of a graph is the independent variable plotted? | horizontal
🗑
|
||||
| step that results in a hypothesis being “educated?” | gathering information
🗑
|
||||
| hypothesis | an educated guess for a question or problem
🗑
|
||||
| scientific process often begins with | posing questions
🗑
|
||||
| A basketball has a mass of 260 grams | quantitative observation
🗑
|
||||
| kilo | 1,000
🗑
|
||||
| measure of the amount of matter in an object | mass
🗑
|
||||
| used to measure the mass of an object | triple beam balance
🗑
|
||||
| used to measure the volume of a liquid | graduated cylinder
🗑
|
||||
| particles in atoms have a negative electric charge | electrons
🗑
|
||||
| number of protons equals the number of | electrons
🗑
|
||||
| only particles found in the nucleus of an atom | protons and neutrons
🗑
|
||||
| have no charge; they are considered neutral | neutrons
🗑
|
||||
| located outside of the nucleus, orbiting around it | electrons
🗑
|
||||
| positively charged particles in the nucleus of an atom | protons
🗑
|
||||
| Neutrons are located | in the nucleus
🗑
|
||||
| atomic number | number of protons
🗑
|
||||
| most reactive metals | group 1
🗑
|
||||
| Elements are in a particular column of the periodic table because | number of valence electrons
🗑
|
||||
| noble gases are located in group | group 18
🗑
|
||||
| Which type of element do groups 13-17 all contain? | metalloids
🗑
|
||||
| How many valence electrons does an atom of Chlorine have? | 7
🗑
|
||||
| How many protons does an atom of Boron have? | 5
🗑
|
||||
| How many total electrons does an atom of Helium have? | 2
🗑
|
||||
| Atoms of the element Carbon have how many valence electrons? | 4
🗑
|
||||
| Group 17, the halogens, contains mostly which type of element? | nonmetals
🗑
|
||||
| What happens when chemical bonds break and new bonds form? | chemical reaction
🗑
|
||||
| what does the law of conservation of mass mean? | Matter is not created or destroyed
🗑
|
||||
| Ionic bonds form between | metal and nonmetal
🗑
|
||||
| A chemical bond formed when two atoms share electrons | covalent
🗑
|
||||
| When an atom gains an electron, it becomes a | negative ion
🗑
|
||||
| ionic compound | NaCl
🗑
|
||||
| attractive force between atoms that have transferred valence electrons | ionic bond
🗑
|
||||
| When an atom loses one or more electrons | positive ion
🗑
|
||||
| Covalent compounds form between | nonmetals
🗑
|
||||
| covalent compound | C3H8O
🗑
|
||||
| mixture that appears uniform throughout | solution
🗑
|
||||
| solute is present | in a smaller amount
🗑
|
||||
| molecules move from an area of __ concentration to an area of ___ concentration | higher, lower
🗑
|
||||
| osmosis is the process of _____ movement | water
🗑
|
||||
| hypotonic solution | water moves into the cell
🗑
|
||||
| hypertonic solution | water moves out of the cell
🗑
|
||||
| isotonic solution | water moves equally in and out of cell
🗑
|
||||
| solute | gets dissolved
🗑
|
||||
| solvent | does the dissolving
🗑
|
||||
| solvent is present | in a larger amount
🗑
|
||||
| acids produce __ ions | hydrogen
🗑
|
||||
| bases produce __ ions | hydroxide
🗑
|
||||
| pH scale measures | concentration of hydrogen ions
🗑
|
||||
| Concentration of H ions is high | pH is low
🗑
|
||||
| Concentration of H ions is low | pH is high
🗑
|
||||
| material used to increase the rate of a chemical reaction | catalyst
🗑
|
||||
| how to supply activation energy to begin a reaction | heat it up
🗑
|
||||
| minimum amount of energy that has to be added to start a reaction | activation energy
🗑
|
||||
| increase in temperature affects the rate of a chemical reaction | gives particles more energy
🗑
|
||||
| increase in surface area affects the rate of a chemical reaction | speeds up the reaction
🗑
|
||||
| increase in concentration of reactants affects the rate of a chemical reaction | supplies more particles to react
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
asnellgrove
Popular Science sets