Elements, Compounds and Mixtures
Carbon (C) is an example of a ________________?
element
True or False: A Cation is an ion with a positive charge.
true
Data that refers to the numerical values of what we are observing is:
quantitative data
True or False: When disposing of chemicals, it is proper procedure to pour all unused chemicals down the drain.
false
Which situation would the power shower come in handy?
a piece of clothing on fire
A ____________ is a substance made of atoms of two or more different elements that are chemically combined
compound
Which subatomic particle has a positive charge?
protons
A variable that stay the same regardless of what else you are changing is a __________ variable.
controlled
True or False: When working with chemicals, it is the best practice to smell the chemicals directly, rather than wafting them towards you
false
Cole is testing to see if what he drinks before running effects his finish time. He tests it with water, juice, milk and carrot juice. He wears the same clothes and shoes regardless. What variable would the different drinks be classified as?
independent
True or False: When elements combine to make a specific compound, they always combine in the same proportions
true
Which subatomic particle has a neutral charge?
neutron
A variable that will be changed by the variable you change, meaning this is you are measuring the change of, is a _____________ variable
dependent
What does the P in PASS stand for, in regards to fire extinguishers?
pull the pin
Which subatomic particle do we use in order to make the atomic number
proton
A __________________ is different from the elements that it is composed of, but a ____________________ may have properties similar to the pure substances that form it.
compound, mixture
Which subatomic particle has a negitive charge?
electrons
A variable that is changed by you in the experiment, meaning this is what you are changing each time you do a trial, is a _____________ variable.
independent
How long should you cleanse out your eyes after getting chemicals splashed up into them?
20 min
Which subatomic particle orbits the nucleus?
electron
When substances doesn't mix uniformly and aren't evenly distributed they form a _______________________
heterogeneous mix
what is the current model of the Atom?
electron cloud model
Data that refers to the characteristics of what we are observing is:
qualitative data
When taking recently heated glassware, you should clean it in___
what is, warm water
A ________________ is a combination of chemical symbols and numbers to represent a substance. It shows how many atoms of each element are in a unit of a substance.
chemical formula